BV Bicycle Pump Durable Steel Bike Floor Pump 17/24 inch Smart Valve Head, 160 psi, Automatically Reversible Presta and Schrader (Black- Full Size)Features Twin Valve Design Newly designed valve head can easily switch between Presta and Schrader valves and without any air leaks; No more reverse! Stable and Durable: Steel barrel with ergonomically designed comfortable handle Customer Service: Please feel free to contact us if you have any questions TWIN VALVE DESIGN so you can easily switch between Presta and Schrader valves; No compromises Product Description bicycle floor pump bike pump