Description Are you looking for a professional, yet affordable bike stem set? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional bike stem set must meet you needs. It is one of the best choices for you. Features -Material: Aluminum Alloy. - Good Performance: The aluminum alloy has good performance, can tighten nut and protect rim. - It protects of tubeless test tube from scratches. It is durable, not easy to deform, safe and reliable. - The detachable coil is very flexible, easy to install and disassemble, easy to inflate and add sealant. - Made with fine craftsmanship, it is well sealed. Equipped with lock nut to fix the on the rim. No need to worry about leakage. - Suitable for most mountain bikes and rim contours, valves. Good Performance: The aluminum alloy has good performance, can tighten nut and protect rim. It protects of tubeless test tube from scratches. It is durable, not easy to deform, safe and reliable. The detachable coil is very flexible, easy to install and disassemble, easy to inflate and add sealant. Made with fine craftsmanship, it is well sealed. Equipped with lock nut to fix the on the rim. No need to worry about leakage. Suitable for most mountain bikes and rim contours, valves.