Valve Caps, Gotd 2pcs Bicycle Grenade Shaped Bike Cycling Tyre Valve Dust Cap Cover for Bike Bicycle MTB BMX Car Quantity: 2PCS, Weatherproof and durable Protective Car Tyre Valve Caps to help prevent leakage, dirt and other objects from damaging cores Material:Aluminium and Plastic. Size approx :7mm(inner diameter) x 36mm(L) Fit for all car ,motorcycle models Easy to install, only screws onto tire valve stem. Instead of the original bad caps of your tire,prevent the valve stem from leaking