ITEM NAME:100Pcs Car Motorcycle Bicycle Alloy Tyre Tire Valve Stem Cores Fr Schrader Valve Product Description Description: Features: 100% brand new and high quality; Durable and nice appearance; Anti-corrosive and easy to install; Specifications: Material: zinc alloy Product size: 19 x 5 x 5mm/0.75 x 0.20 x 0.20" Gross weight: 68g Quantity: 100pcs Included: 100 x Tire Valve Stem Cores.Quantity: 100pcs. Included: 100 x Tire Valve Stem Cores. Material: zinc alloy. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.