●High quality: The tubeless Schrader valve stems are made of high-quality anodised aluminium, they are not only lightweight, but also rust-proof, which can ensure a longer service life. ●Practical function: comes with alloy threaded caps, rubber base and O-ring, both of which contribute to an airtight seal. ●Removable tool: removable valve insert for easy attachment of tyre sealant. ●【Dimensions】: 2 pieces 60mm bicycle sachrader valve stems. ●Reliable customer service: MUQZI always focuses on product quality and service. If you have any questions, please contact us. We are here ready to help.