Lots of Presta to Schrader valve adapters exist, but this is the only Schrader-to-Presta adapter we've ever found! Use your Presta pump on Schrader valves with our new Schrader-to-Presta adapter! No need to fiddle with you pump head when you're inflating tires with Schrader valves. Just thread on our Schrader-to-Presta adapter, and you're good to go extremely convenient and gives you the flexibility to switch out your valve type or pump type at will. Fits firmly, and seals completely to your bicycle valve with a high quality stainless steel construction.