A high performance floor pump that makes no compromises in its design materials or functionlargest 3quot 76mm oversized gaugecast aluminium base and aluminium barrel constructionnew cast aluminium ergonomic wing handle with pressure reliefincludes spare rubber seal for headcast aluminium base provides a stable platform42 inch 110cm hose length makes the pump easy to useswitchhitter ii head automatically switches between schrader and presta valves