The Pro Compact Minipump w/ Magnet Lock System is an easy-to-use mini pump that works on either Schrader or Presta valves without the need to convert the pump head. It features a rubber locking strap to secure it on the bike and keep it from rattling or bouncing loose even on bumpy roads. Magnetic locking also keeps the pump from extending while stowed on the bike and a reassuring click tells you it is held in the closed position when you are not using it. Specifications: Length: - Valve Compatibility: Presta & Schrader Max Pressure: 120 PSI Pump Type: High Pressure Gauge: - Mount: Bottle Cage Bolt Mount Material: Glass Fiber/Nylon Color: Black Weight: -