Topeak Joe Blow Ace Floor Bicycle Tire Pump, Silver Works with Presta, Schrader or Dunlop valves Smart head automatically adjusts to fit Presta and Schrader valves and with built in air release button Choose inflation with top mounted 3-stage selector Anatomical, oversized padded handle adds comfort Large, rubber coated base for extra stability SmartHead 260 psi / 18 bar Pumping Capacity 2.4 kgs / 5.29lbs 2 Stage High Performance