The Blackburn Mammoth 2-Stage Anyvalve mini-pump is a great addition to any flat kit. It can switch between high-pressure and high-volume modes meaning you always get the most out of the large diameter design. Anyvalve tech allows you to use this pump on presta, schrader and even dunlop valves. Whether you're inflating a road tire to 100psi or a high-volume mountain bike tire to 20psi, you will always get an efficient inflate with the Mammoth 2-Stage.