Stage one opens both barrels for big volume to reach 60 psi with 30% less effort than standard floor pumps. Stage two uses the main barrel only for pressures up to 120 psi while stage three engages the small barrel to achieve an amazing 260 psi. Two tone padded handles, wide stable base and new 4” base mounted analog gauge make inflation easy. The new SmartHead® DX1 automatically adjusts to fit Presta and Schrader valves without swapping parts and the lower profile air release button makes getting the right pressure easy. Includes ball and air bladder type inflation needles.