Compatible with MTB and road wheels, the BW Tubeless Schrader Valve Stem, with its rubber base and O-ring construction, provides a superior airtight seal for your tubeless set up. Available in both silver and black color and either 36mm or 44mm valve length, and with a removable valve core for stress-free tyre inflation, each pack contains two stems and dust caps. We're so confident you'll love these we offer a 90-day money back guarantee.