The Blackburn Core Mini-Pump provides a compact solution for inflating your tires on the road and trail, so you can easily toss it in your hydration pack or attach it to your frame with the included mount. This Core Mini-Pump features a flexible, pull-out hose that reduces stress, so you don't snap delicate valves clean off. The Presta thread-on head resides atop the hose, which conveniently stores away in the barrel of the pump when it's not in use. And because Presta valves often get loose and release excess air while you're riding, there's a machined valve core tool right at the pump's base for keeping everything nice and snug.