TAC 9 Bicycle Inner Tubes, 700 x 35-40 (27 x 1-3/8) Regular Schrader Valve, 32mm (ISO 622/630)

Well, exactly what the title says. The one that still works did not give me any problem since I bought it.

Tac 9 inner tube in the 700x35-40 seems to be sized appropriately. This particular tube had a Schrader valve complete with cap. This is the style of valve seen on cars. To install a tube such as this first remove the old tube and check the inside of tire to make sure there is no sharp objects stuck in the tread or sidewall. Then put a little air in the tube and dust the tube and tire with a powder such as talc. Hook one bead of the tire on the rim, insert the tube and valve then hook the other bead on the tire. Using a manual air pump slowly inflate the tire occasionally checking that the bead is seating evenly and the valve stem is straight. Check and adjust to comply with the pressure value on the side of the tire.My experience with this tire is that it experienced a failure. The morning after a ride the tire was flat. After checking the tube it suffered a split with no corresponding sharp object in or through the tire. The tube failed in my opinion. I have come to learn that this is common with economy tubes. Purchase this tube at your discretion.

When prices are low you think quality also low, but this is not the case here.

Round, hold air yay, and fun in the bath too. :)

If I have to purchase anymore, I will go with this brand because I can really feel a more comfortable ride. Makes a big difference!!

Fit my bike rims well and hold air. As described!

I found the tube to be perfect. Just what I needed for a larger than typical tire. It arrived just as expected.

All my bikes use Presta valves, but I agreed to do a quick winter bike overhaul for a friend of my wife. Of course the friend's bike has Schrader valves, and of course I needed to replace a tube. So I bought these. They appear to be a rebranded Kenda tube, at a much better price than the local bike shop. The friend is happy, my wife is happy, and I didn't spend an arm and a leg. Win, win, win.