thread-on-schrader-chuck
thread-on-schrader-chuck, A This chuck comes from the same vendor who supplied them to SILCA pumps for more than 25 years. It makes a great replacement or addition if you are buying a new Stainless Presta chuck or CP1 Disc Adapter for your older pump.A This part is made from nickel-plated brass and uses an o-ring to seal the connection.