This kit features an exclusive Needle Roller Thrust Bearing which is utilized during both pushing and pulling operations providing minimal friction. This unique feature ensures proper damper alignment with the crank centerline and provides smooth, consistent pressure and seating any time, every time. All PPP Harmonic Damper Puller/Installer kits thrive on heavy usage,and feature all CNC Machined Billet Steel components. This is clearly the best and most comprehensive kit on the market and provides a superb value for the professional engine builder, hot rodder, or home mechanic. This Kit can also be used for steering wheels, pulleys and other similar items.