That is, a pretty interesting bike pump called the Zilch ... and jerk your hand into the cassette teeth. What about Schrader ...

If your bike has Presta valves on its rims or ... the Zilch's head hooks onto the pump handle and is secured there by an integrated neodymium magnet. Two Schrader-to-Presta valve adapters are ...

Versatile Pump Head: TwinHead DX fits Presta, Schrader, and Dunlop valves. Long 360 degrees pivot hose. Ergonomic Design: Padded oversized handle for comfort during use. Additional Features ...