The Topeak Mountain Dual Action Pump is all about inflating your tire as quickly as possible so you can get back to riding the trails. The mini-pump's oversized aluminum barrel fills large volume mountain bike and fat bike tires with ease. Its Dual Action design doubles the volume with each stroke and inflates tires up to pressure fast. Features: High-volume aluminum barrel Pump head compatible with Presta/Schrader/Dunlop valves Integrated dust cap keeps pump head clean Maximum pressure: 60 PSI / 4 bar Includes side mount bracket to mount on frame Dimensions: 22.3 x 4.6 x 3.4cm (8.8" x 1.8" x 1.3") Specifications: Length: 245mm Valve Compatibility: Presta, Schrader, & Dunlop Max Pressure: 60 PSI Pump Type: High Volume Gauge: - Mount: Bottle Cage Bolt Mount Material: Aluminum Color: Black Weight: 126g