About the Muc-Off Tubeless Presta Valve Kit We\\\'re excited to bring you Muc-Off\\\'s newly launch tubeless tyre valves in two sizes. These valves will make the famous smooth tubeless ride even easier to achieve. It\\\'s so frustrating to find leaky tubeless setups that won\\\'t seal, and with these premium tubeless valves this will no longer be a problem, meaning your tyres will stay inflated between rides. There are no longer any excuses, go tubeless! About Muc-Off At Muc-Off they\\\'re big into being active. Whether its on a mountain, trail or at the skate park, they just love to be outside and going big. Muc-Off are obsessed with making the most innovative care products around to keep you and your toys running at their maximum and making them look like new when you\\\'re done! So what\\\'s the story? It all started way back when Right Said Fred were too sexy for their shirts and Downhill wasn\\\'t even part of the World Cup. Yep, way back in 1991 Rex and Marilyn Trimnell got things started with X-Lite UK. After designing and manufacturing the world\\\'s first twin crown bicycle fork, Rex created a perfectly pink spray to clean his kit. To make a long story short, Rex\\\'s cleaner was the best thing since sliced bread, and it wasn\\\'t long before word got out and Muc-Off was born. Key Features 6061 Aluminium machined stem.6061 Aluminium machined cap.4mm machined Allen Key slot for easy installation / removal. Includes Valve Core Removal Tool (integrated into spare alloy cap).Available in lengths, 44mm and 60mm. Tools Buying Guide Please be aware that this item is not available on Cycle to Work Schemes.