Blackburn Core Mini Pump - Grey drumbeat21-824 With Shimano's hidden hub gears

With Shimano's hidden hub gears

Ventilation: 18 vents

- Fits 26" and 700c frames

durability and control

- Center bore for axle clearance is 10 mm

Blackburn Core Mini Pump - Grey drumbeat21-824 With Shimano's hidden hub gearsCORE MINI PUMP The pull out hose puts less stress on the valve. And you weren't stressed to start with. It's all very well hauling a giant pump around, but all that leverage can snap a delicate valve stem right off. Our presta only head sits on a short pull out hose to give more options on where you pump from and fewer chances of your rippling muscles pulling the thing clean off. We weren't using that space in the barrel anyway, so the hose doesn't