BWSHLF Tubeless Presta Valve Stem 40/44/55/60/65/80/100 mm, Super Light Alloy Presta Valve Stem Kit with Valve Core Remover Tool and Valve Stem Caps - Multiple Color and Size Options(Pair)

These Were A Bargain. Got A Few Sets For The MTB Rims.

Tiene buena calidad para el costo, totalmente funcional

The valve comes with two caps each. One cap is the regular cap and the other has the inbuilt valve core removing tool which works very well indeed. The only draw back to the valve is how much it sticks up on the inside of the rim. I couldn't slide the bead over it so I had to remove the tyre for the replacement process. It's installed now but I had to use the bike shop electric pump to reseat the tyre which wouldn't have been necessary if I could have just slid the bead over it.

It is nice looking stems and perfectly fit into tubeless tire.

I love these. The attention to detail is amazing. First, the quality is good all around. The threads are precise and smooth. The grommet and O-ring are good quality with no abnormalities that affect usage. Top cap machining is excellent. While the basics of presta valve stems are the same and fit a standard, there are ways to stand out from the typical presta valve. 1) The O-ring is fully captured by the tightening nut. No matter how much you tighten, the 0ring will not push out or deform thanks to the deep capture channel of the nut. The last 4 photos illustrate how well the O-ring is captured. 2) The interior base is keyed for an allen wrench so you can hold the valve stem in place and torque your tightening screw down easily. See photo. 3) The interior grommet is flanked by a large base. Even if you torque the tightening screw down further than you should, it is hard for the gasket to go past the base. It is almost fool proof, although I still wouldn't torque this down to the maximum. You just want to remove any play in the stem when tightening. 4 )Both top caps serve as core removal tools. They fit well and make easy work of even the tightest cores. See cap photos. 5) The look is amazing. I use Bontrager tires & wheels so the B logo fits perfectly. These are great valve stems. The amazing grommet and O-ring design makes these a cut above the typical stems you see. Not too mention the top caps. While they still suffer from thin and weak shafts due to the presta standard, they are the same durable as any other valves regarding the shaft. Also, these valve stems will not fix a bad tape job. They may help gloss over a mediocre tape job at the valve hole, but a bad tape job will always leak. I 10 years of daily riding, I have tried it all, and these are my favorites thus far. Prestas are not perfect, but these help elevate the platform a bit.