Blackburn Mammoth AnyValve Black. Next time you go mountain biking, remember to bring your big boy pump. The Blackburn Mammoth AnyValve mini pump packs a big punch in a little package. With a rubberized t handle, the ability to automatically switch between Schrader, Presta, and Dunlop valves, and the fact that it can smash up to 90 PSI of air into your knobbies in just a few minutes have made this pump a legend on the trail for over twenty years.
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