SKS E.V.A. Kopf

Got it as a replacement for the pump head of my Topeak pump. While this pump head is marketed for use with Presta and Schrader valves, I find it very hard to use on Schrader valves. The amount of force required to make the pin activate the valve in unreal. The head works well enough with Presta valves, but is not designed to work on Schrader valves.

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