Presta Valve Core (10 Pack) and Removal ToolPresta Valve Core Pack of 10 + Tool. Universally compatible.Features of Presta Valve Core (10 Pack) and Removal Tool DURABLE AND STURDY: These valve cores are made of quality copper and nickel. | UNIVERSALLY COMPATIBLE | SATISFACTION GUARANTEED: Please do not hesitate to contact us if you arent happy. Vel..