ITEM NAME:Bike Bicycle Presta to Schrader Valve Adapters+ Presta Valve Extension #gib Product Description Description: 3pcs/set Aluminum Alloy Bike Bicycle Presta to Schrader Valve Adapters+ Presta Valve Extension Features: - Good material, durable and easy to install; - No leakage due to environmental protection seal ring; - Comes with a Presta to Schrader valve adapter, Schrader to Presta valve adapter, and a Presta valve extension; Specifications: Material: metal Packing size: 110 x 105 x 10mm/4.33 x 4.13 x 0.39" Gross weight: 14g Included: 1 x Presta to Schrader Valve Adapter 1 x Schrader to Presta Valve Adapter 1 x Presta Valve Extension.Included: 1 x Presta to Schrader Valve Adapter. 1 x Schrader to Presta Valve Adapter. 1 x Presta Valve Extension. Mon. to Sat. - Good material, durable and easy to install;. If item is defective after 3 months, you can still send it back to us.