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 20lb Rubber Coated Hex Dumbbell $19.49 Time Remaining: 27d 5h 29m Buy It Now for only: $19.49 |
 CFF Rubber Hex Dumbbells 15 lb pair Lifetime Warranty $37.80 Time Remaining: 24d 6h Buy It Now for only: $37.80 |
 Rubber Hex Dumbell 10lb Brand New $15.00 Time Remaining: 29d 11m Buy It Now for only: $15.00 |
 New Rubber Hex Dumbbells 5 50 Lb Set Total 550 Lbs PICK UP Only 10 Pairs $630.00 Time Remaining: 3d 5h 36m Buy It Now for only: $630.00 |
 Rubber Hex Dumbells 5lb Brand New $7.50 Time Remaining: 29d 9m Buy It Now for only: $7.50 |
 CFF Rubber Hex Dumbbells 12 lb pair Lifetime Warranty $30.24 Time Remaining: 9d 4h 47m Buy It Now for only: $30.24 |
 Rubber Hex Dumbells 15lb Brand New $22.50 Time Remaining: 29d 12m Buy It Now for only: $22.50 |
 CFF Rubber Hex Dumbbells 3 lb pair Lifetime Warranty $7.56 Time Remaining: 9d 4h 45m Buy It Now for only: $7.56 |
 Rubber Hex Dumbell 20lb Brand New $30.00 Time Remaining: 29d 13m Buy It Now for only: $30.00 |
 40lb Rubber Coated Hex Dumbbell $37.99 Time Remaining: 14d 3h 59m Buy It Now for only: $37.99 |
 Rubber Hex Dumbells 25lb Brand New $37.50 Time Remaining: 29d 14m Buy It Now for only: $37.50 |
 J Fit Rubber Hex Dumbbell 15lb Pair $72.95 Time Remaining: 16d 8h 45m Buy It Now for only: $72.95 |
 Body Solid Set of 6 Rubber Coated Hex Dumbbells SDRS530 $389.99 Time Remaining: 16d 7h 21m Buy It Now for only: $389.99 |
 CFF Rubber Hex Dumbbells weights 5 50 lb set gym new $693.00 Time Remaining: 8d 1h 26m Buy It Now for only: $693.00 |
 5 lb 25 lb Rubber Hex Dumbbell Set XM 3301 150S Awesome Quality $278.00 Time Remaining: 27d 7h 43m Buy It Now for only: $278.00 |
 Rubber Hex Dumbells 30lb Brand New $45.00 Time Remaining: 29d 15m Buy It Now for only: $45.00 |
 Rubber Coated Hex Dumbbell Set 5 to 50 Lbs $825.00 Time Remaining: 15d 2h 33m Buy It Now for only: $825.00 |
 15lb Rubber Coated Hex Dumbbell $14.99 Time Remaining: 14d 3h 45m Buy It Now for only: $14.99 |
 45lb Rubber Coated Hex Dumbbell $44.55 Time Remaining: 16d 1h 48m Buy It Now for only: $44.55 |
 30lb Rubber Coated Hex Dumbbell $29.49 Time Remaining: 14d 3h 54m Buy It Now for only: $29.49 |
 65lb Rubber Coated Hex Dumbbell $199.99 Time Remaining: 14d 4h 12m Buy It Now for only: $199.99 |
 8lb Rubber Coated Hex Dumbbell $8.00 Time Remaining: 14d 3h 36m Buy It Now for only: $8.00 |
 10lb Rubber Coated Hex Dumbbell $9.99 Time Remaining: 14d 3h 36m Buy It Now for only: $9.99 |
 J Fit Pair of 35 lbs Rubber Coated Hex Dumbbells 20 6535 2 $124.99 Time Remaining: 10d 15h 36m Buy It Now for only: $124.99 |
 60lb Rubber Coated Hex Dumbbell $199.99 Time Remaining: 14d 4h 10m Buy It Now for only: $199.99 |
 XMark 5 lb 25 lb Rubber Hex Dumbbell Set XM 3301 150S $307.56 Time Remaining: 8d 6h 13m Buy It Now for only: $307.56 |
 50lb Rubber Coated Hex Dumbbell $46.49 Time Remaining: 14d 4h 4m Buy It Now for only: $46.49 |
 CAP 45 lb Rubber Coated Hex Dumbbell w Chrome Handle $85.99 Time Remaining: 16d 10h 28m Buy It Now for only: $85.99 |
 RUBBER HEX DUMBBELLS 5 50LB TROY BARBELL SET SHIP INC $829.00 Time Remaining: 17d 1h 34m Buy It Now for only: $829.00 |
 CFF Rubber Hex Dumbbells weights 3 25 lb set 8 pairs $246.96 Time Remaining: 9d 4h 42m Buy It Now for only: $246.96 |
 25lb Rubber Coated Hex Dumbbell $24.49 Time Remaining: 14d 3h 51m Buy It Now for only: $24.49 |
 5 lb 50 lb Rubber Dumbbell Set XM 3301 550S Rubber Hex $878.00 Time Remaining: 27d 8h 12m Buy It Now for only: $878.00 |
 Body Solid Rack + 6 Pair of Rubber Coated Hex Dumbbells $615.00 Time Remaining: 25d 4h 3m Buy It Now for only: $615.00 |
 Body Solid Rubber Hex Dumbbell 5 50 lb Pairs SDRS550 $949.00 Time Remaining: 6d 8h 44m Buy It Now for only: $949.00 |
 CFF Rubber Hex Dumbbells 30 lb pair Lifetime Warranty $75.60 Time Remaining: 24d 6h 51m Buy It Now for only: $75.60 |
 CFF Rubber Hex Dumbbells 75 lb pair Lifetime Warranty $189.00 Time Remaining: 29d 23h 44m Buy It Now for only: $189.00 |
 12lb Rubber Coated Hex Dumbbell $12.00 Time Remaining: 14d 3h 39m Buy It Now for only: $12.00 |
 Rubber Hex Dumbbells Set 2 10 LB Ea Gain Lean Muscle $35.00 Time Remaining: 11d 1h 34m Buy It Now for only: $35.00 |
 York Rubber Hex Dumbbells weights 110 lb new set $279.40 Time Remaining: 10h 32m Buy It Now for only: $279.40 |
 5 lb 65 lb Rubber Dumbbell Set XM 3301 910S Rubber Hex Dumbel $1,488.00 Time Remaining: 28d 3h 15m Buy It Now for only: $1,488.00 |
 XMARK 10 35 Lb Rubber Hex Dumbbell Set XM 3301 270S $590.49 Time Remaining: 27d 8h 43m Buy It Now for only: $590.49 |
 New Rubber Hex Dumbbells 25 Lb PAIR Lifetime Warranty $66.50 Time Remaining: 3d 5h 27m Buy It Now for only: $66.50 |
 Body Solid SDRS550 5 50 Pound Rubber Hex Dumbbell Set Workout Exercise Equipment $1,158.99 Time Remaining: 22d 11h 7m Buy It Now for only: $1,158.99 |
 RUBBER HEX DUMBBELLS 5 50LB SET WITH RACK SHIP INCLUD $1,020.00 Time Remaining: 17d 1h 35m Buy It Now for only: $1,020.00 |
 10 lb 35 lb Rubber Dumbbell Set XM 3301 270S Rubber Hex Quality $448.00 Time Remaining: 27d 8h 4m Buy It Now for only: $448.00 |
 CAP 50 lb Rubber Coated Hex Dumbbell w Chrome Handle $45.00 Time Remaining: 5d 1h 48m Buy It Now for only: $45.00 |
 CFF Rubber Hex Dumbbells 175 lb pair Lifetime Warranty $42.35 Time Remaining: 1d 4h 20m Buy It Now for only: $42.35 |
 5lb Rubber Coated Hex Dumbbell $4.75 Time Remaining: 14d 3h 34m Buy It Now for only: $4.75 |
 Rubber Hex Dumbell 45lb Brand New $67.50 Time Remaining: 29d 18m Buy It Now for only: $67.50 |
 CFF Rubber Hex Dumbbells 40 lb pair Lifetime Warranty $100.80 Time Remaining: 24d 9h 34m Buy It Now for only: $100.80 |
 CFF Rubber Hex Dumbbells 8 lb pair Lifetime Warranty $20.16 Time Remaining: 9d 4h 46m Buy It Now for only: $20.16 |
 Valor Athletic 3lb Rubber Hex Dumbbell Pair RH 3 $24.99 Time Remaining: 1d 12h 49m Buy It Now for only: $24.99 |
 Valor Athletic 8lb Rubber Hex Dumbbell Pair RH 8 $39.99 Time Remaining: 1d 12h 49m Buy It Now for only: $39.99 |
 45lb Rubber Coated Hex Dumbbell $42.79 Time Remaining: 14d 4h 2m Buy It Now for only: $42.79 |
 Dumbell Set York Barbell Brand New Rubber Hex Dumbells $140.00 Time Remaining: 29d 5h 44m Buy It Now for only: $140.00 |
 NEW SDRS550 Body Solid Rubber Coated Hex Dumbbell Set 5 50 lb Pairs $945.00 Time Remaining: 18d 11h 35m Buy It Now for only: $945.00 |
 j fit 12lb Rubber Hex Dumbbell Single Workout Exercise Equipment $42.88 Time Remaining: 22d 7h 48m Buy It Now for only: $42.88 |
 35lb Rubber Coated Hex Dumbbell $33.29 Time Remaining: 14d 3h 56m Buy It Now for only: $33.29 |
 Body Solid Rubber Coated Hex Dumbbells 5 30lb SDRS530 $389.99 Time Remaining: 25d 4h 3m Buy It Now for only: $389.99 |
 CFF Rubber Hex Dumbbells 35 lb pair Lifetime Warranty $88.20 Time Remaining: 24d 9h 26m Buy It Now for only: $88.20 |
 j fit 5lb Rubber Hex Dumbbell Single 20 6505 NEW Rubber Coated $23.00 Time Remaining: 22h 28m Buy It Now for only: $23.00 |
 CFF Rubber Hex Dumbbells 55 lb pair Lifetime Warranty $138.60 Time Remaining: 24d 9h 54m Buy It Now for only: $138.60 |
 J Fit Rubber Hex Dumbbell 45lb $87.95 Time Remaining: 16d 8h 44m Buy It Now for only: $87.95 |
 XMark 10 lb 35 lb Rubber Hex Dumbbell Set XM 3301 270S $607.99 Time Remaining: 28d 6h 9m Buy It Now for only: $607.99 |
 XMARK 5 LB 65 LB RUBBER HEX DUMBBELL SET BRAND NEW $1,399.00 Time Remaining: 5d 8h 23m Buy It Now for only: $1,399.00 |
 Rubber Hex Dumbell 35lb Brand New $52.50 Time Remaining: 29d 16m Buy It Now for only: $52.50 |
 Body Solid Rubber Coated Hex Dumbbells 55 75lb SDRS650 $1,039.99 Time Remaining: 15d 14h 15m Buy It Now for only: $1,039.99 |
 XMark 5 lb 25 lb Rubber Hex Dumbbell Set XM 3301 150S $307.56 Time Remaining: 7d 3h 1m Buy It Now for only: $307.56 |
 CAP 60 lb Rubber Coated Hex Dumbbell w Chrome Handle $135.99 Time Remaining: 16d 10h 29m Buy It Now for only: $135.99 |
 Valor Athletics RH 15 15lb Rubber Hex Dumbbell Pair $69.99 Time Remaining: 1d 12h 49m Buy It Now for only: $69.99 |
 CFF Rubber Hex Dumbbells weights 5 25 lb set gym new $189.00 Time Remaining: 9d 4h 38m Buy It Now for only: $189.00 |
 York Rubber Hex Dumbbells weights 100 lb new set $253.00 Time Remaining: 10h 32m Buy It Now for only: $253.00 |
 Rubber hex dumbbells 35 50 lb w gym weights rack NEW $496.80 Time Remaining: 21d 15h 7m Buy It Now for only: $496.80 |
 J Fit Rubber Hex Dumbbell 12lb $41.95 Time Remaining: 16d 8h 44m Buy It Now for only: $41.95 |
 50 lb Pound Pair Rubber Coated Hex Head Chrome Dumbbells Crossfit Home Gym $122.95 Time Remaining: 18d 1h 42m Buy It Now for only: $122.95 |
 j fit 4lb Rubber Hex Dumbbell Single 20 6504 NEW Rubber Coated $20.64 Time Remaining: 22h 28m Buy It Now for only: $20.64 |
 Hex Dumbells York Barbell Brand New 25 lbs Pair Rubber $6.53 Time Remaining: 10d 5h 19m Buy It Now for only: $6.53 |
 j fit 15lb Rubber Hex Dumbbell Single Workout Exercise Equipment $48.26 Time Remaining: 22d 7h 48m Buy It Now for only: $48.26 |
 CFF Rubber Hex Dumbbells 25 lb pair Lifetime Warranty $63.00 Time Remaining: 20d 7h 23m Buy It Now for only: $63.00 |
 Rubber Hex Dumbbells Chrome Handles 12 lbs ea FREE SHIP $69.95 Time Remaining: 2d 6h 13m Buy It Now for only: $69.95 |
 New Pair Rubber Hex Dumbbells Chrome Handles 10 lbs ea $33.95 Time Remaining: 18d 6h 43m Buy It Now for only: $33.95 |
 New Muscle Driver MDUSA 3lb Rubber Coated Hex Dumbbells 3 lb pair SDR3 $9.99 Time Remaining: 25d 11h 6m Buy It Now for only: $9.99 |
 55lb Rubber Coated Hex Dumbbell $52.29 Time Remaining: 14d 4h 7m Buy It Now for only: $52.29 |
 CFF Rubber Hex Dumbbells 50 lb pair Lifetime Warranty $126.00 Time Remaining: 24d 9h 39m Buy It Now for only: $126.00 |
 CAP 90 lb Rubber Coated Hex Dumbbell w Chrome Handle $203.99 Time Remaining: 16d 10h 28m Buy It Now for only: $203.99 |
 Body Solid Rubber Hex Dumbbell Weight Set SDRS900 $1,465.99 Time Remaining: 16d 7h 15m Buy It Now for only: $1,465.99 |
 Rubber Hex Dumbbells Set of 2 3 LB Ea Gain Lean Muscle $10.50 Time Remaining: 3d 6h 25m Buy It Now for only: $10.50 |
 New Muscle Driver MDUSA 40lb Rubber Coated Hex Dumbbells 40 lb pair SDR40 $94.99 Time Remaining: 25d 10h 38m Buy It Now for only: $94.99 |
 J Fit Rubber Hex Dumbbell 20lb $59.95 Time Remaining: 16d 8h 45m Buy It Now for only: $59.95 |
 Body Solid SDRS650 55 75 Pound Rubber Hex Dumbbell Set $1,238.12 Time Remaining: 22d 11h 7m Buy It Now for only: $1,238.12 |
 NEW XM 3301 150S XMark Fitness 5 lb to 25 lb Rubber Coated Hex Dumbbell Set $305.00 Time Remaining: 24d 8h 19m Buy It Now for only: $305.00 |
 Body Solid Rack + 10 Pair 5 50lbs Rubber Hex Dumbbells $1,222.00 Time Remaining: 25d 4h 3m Buy It Now for only: $1,222.00 |
 X Mark 5 lbs 25 lbs Rubber Hex Dumbbell Set XM 3301 150S $252.08 Time Remaining: 5d 16h 13m Buy It Now for only: $252.08 |
 Cap Barbell Rubber Coated Hex Dumbbell with Contoured C $43.61 Time Remaining: 23d 8h 23m Buy It Now for only: $43.61 |
 CFF Rubber Hex Dumbbells 45 lb pair Lifetime Warranty $113.40 Time Remaining: 24d 9h 35m Buy It Now for only: $113.40 |
 Valor Fitness RH 3 3lb Rubber Hex Dumbbell Pair $29.00 Time Remaining: 1h 1m Buy It Now for only: $29.00 |
 Valor Fitness RH 8 8lb Rubber Hex Dumbbell Pair $42.00 Time Remaining: 1h 6m Buy It Now for only: $42.00 |
 CAP 75 lb Rubber Coated Hex Dumbbell w Chrome Handle $169.99 Time Remaining: 16d 10h 28m Buy It Now for only: $169.99 |
 10 lb Pound Pair Rubber Coated Hex Head Chrome Dumbbells Crossfit Home Gym $32.95 Time Remaining: 18d 1h 10m Buy It Now for only: $32.95 |
 Body Solid Rubber Hex Dumbbell 55 75 lb Pairs SDRS650 $1,078.00 Time Remaining: 3d 2h 48m Buy It Now for only: $1,078.00 |
Rubber Hex
Revieew of Fenix TK20
The head of the TK20 is made up of 2 parts which are adhered together providing a waterproof seal for all the components. Up the front the TK20 has a smooth bezel with an AR coated glass lens sitting slightly recessed below the bezel. I personally would have preferred the lens to be slightly deeper in to reduce the chances of damage, since the TK series are meant to be used under tough conditions. Sitting behind the glass lens is a smooth aluminum reflector which has been nicely polished and finished overall. While there are very fine radial rings due to the machining process running down the reflector cup, they shouldn't have any significant affect on the beam profile. The LED sitting at the bottom of the reflector cup is well-aligned, perhaps just a hair off perfect center. On it's exterior, the head has wide band of striped knurling which provides adequate grip for twisting the head. The rear half of the head is slightly raised and has scallops machined on which seem to be a design element. Initially I though these would serve as an anti-toll feature, but they do know do so, at least not very effectively anyway. As can be seen from the rear view of the head, the "+" battery contact incorporates a physical reverse polarity protection by means of the two slightly raised crescent-shaped metal contacts. Threads are very well machined, clean, smooth and not too fine.
The first thing that I immediately noticed about the battery tube is the thickness of its wall. The TK20 may well have the toughest battery tube of any flashlight I've seen, with a wall about 3mm thick. For grip, Fenix decided to go with a rubber sleeve with a wave texture over the battery tube instead of traditional knurling. This rubber sleeve provides improved friction over a knurled metal surface especially when the light is wet, or if you have sweaty palms. However, one thing I didn't like about this rubber sleeve is that it isn't fitted tightly around the battery tube and is able to twisted around rather easily. Threads on either ends are well machined with a rubber o-ring placed on either ends as a seal against moisture. The threads on the rear are anodized so the light can be locked-out by loosening the tail cap to prevent accidental activation. There's a slightly raised lip at the front end of the battery tube with two screw holes, this is where you may attach the included clip with hex screws. The screw holes don't go all the way through the wall of the battery tube so there's no worry of water seeping in even if you don't attach the clip. The tail cap has a simple and functional design, its rear end is scalloped to that it would be easy to engage the switch while still allowing the light to tail stand quite stably. There are 2 wide slots for lanyard attachments as well. The TK20 uses a forward push button so momentary activation is possible. It has an average amount of tension and travel, and also provides a positive tactile feedback when clicked.
The TK20 is advertised to output 150 lumens on Turbo, and 45 lumens on General mode. The lumen ratings on the TK20 is generally lower than other current Fenix models is because it uses a lower Q2 binned XR-E LED with a warmer tint, instead of a Q5 or higher bin which usually have cool tints. This supposedly helps to provide improved color rendition as compared to the generally cool color temperature of XR-E LED's. It works better at illuminating object in foggy conditions.
The beam profile produced by the TK20 has a tight spot meant for illuminating objects at distance, not very useful for close up work since the spot is so focused. There are some ring-shaped artifacts due to the use of the smooth and slightly misaligned reflector. However in practical use, these minor issues will not impair in any way. The output intensity is intense in the hot spot with usable spill for peripheral vision. Runtime is well maintained as with most Fenix products and regulation is also very good for most of the battery life before dropping sharply at the end.
The Good - Very tough, solid build quality and cleanly machined. Overall good fit and finish. Tactile and responsive switch. Good runtime and regulation.
The Bad - Rubber grip can sometimes slip around the battery tube.
The Relative - Warm beam color tint. Heavier than most other 2x AA lights due to rugged construction. Some minor beam artifacts. Uses a forward push button which allows for momentary activation.
About the Author
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Why does my fish tank smell weird?
I recently bought a 2 gallon hex aquarium. I rinsed everything and set the tank up with gravel, 2 silk plants, and a 3 inch bird figure made of plastic and rubber that I bought from toy store. The tank alo has a under gravel filter. It's been 2 days and the tank has been running with no fish. I noticed th tank had a lot of bubbles on the surface near the hood and that the water had an unusual smell. Is there any explanation for this happening and how can I fix it so I can add fish?
Any help is appreciated!
Thank You
Yes I cleaned everything before I set it up.
Do you think the toy I bought might have something to do with it?
take the toy out. get a proper tank ornimant from a pet store. do a full water change and see if it helps
XMark Rubber Hexagon Dumbells - XM-3301 - Great Dumbbell Review