Item Descriptions:-Dependable Aluminum Valves Stem with Universal round base and O-ring to keep nut tight and protect your rims. Removable valve core for easy installation of tire sealant. Caps include to protect them out of rust.-Light and portable, 5 or 6 Grams totally, easy to carry and operation, modern design, small Size.-Schrader valve (American valve),with fine treatment and precision machining, professional designs to insure the great fit for MTB,Road Bikes ect.-Product include a total of 2pcs 40mm Tubeless Air Valves(Red) , which can completely meet your daily use needs and replacement.Package:2pcs 40mm Tubeless Air Valves(Red)Item Specifications:Colour:RedMaterial:Aluminum AlloyLength:40mmVehicle Service Type:Bicycle