The Steck Manufacturing Axle Popper II is the air tool version of Steck's original Axle Popper Wedge, No. 71411. The Axle Popper II is tapered on both ends of the wedge along with a 6” shaft to fit into an air hammer. The base of the Axle Popper II has been increased by 3/8” to give it additional strength while decreasing potential deflection with the increased power. The original Axle Popper Shim (No. 71412), which is sold separately, can also be used with the Axle Popper II to fill the gap between the half shaft and the transaxle on some vehicles.