ATI Performance Products Damper Puller and Installers, Puller Plate, Installer Studs, Puller Bolts, and Storage Case, Kit.  These ATI Performance Products damper puller and installers will allow you to remove or install a harmonic balancer the easy way. They feature a CNC-machined puller plate that will accept a variety of bolt patterns and stud sizes. Also included are the puller mandrel, studs, and a plastic storage case to keep everything organized.