Product Description - small packing size, large volume The Air Tool Big Bore from Specialized is a large volume mini-pump for extra wide tyres. It can be used with Presta and Schrader valves, and the head is designed to be easy to grip even if you wear thicker gloves during the winter. The roughened surface of the aluminium cylinder ensures you have a secure grip while inflating the tyres. A bracket for mounting on the bottle cage threads is included in the scope of delivery. Specifications:Design:mini-pump, frame pumpType:high volumePressure (max.):3.5 bar (50 psi)Valve Head:Schrader, PrestaTechnical Information:Air Volume:90 cm³Material:AluminiumFeatures:developed for Fat Bikes and extra wide tyresa large pump volume for high tyre pressures while maintaining a small sizean oversized valve head is simply opened by pressing on it and prevents unintentional loosening of the valve insert, it can be operated with winter glovesa flexible hose connection increases user-friendliness and protects valvesa CNC-machined cylinder with rough surface provides secure grip while inflating the tyrea robust composite mount for bottle cage threadsManufacturer Number:47216-3700 Contents:1 x 1 x frame mount Manufacturer: Specialized Germany GmbH Hauptstraße 4 83607 Föching Germany www.specialized.com/contact-us