Proper harmonic balancer removal and press-fit installation is critical to quality craftsmanship. The Fluidampr Professional Harmonic Damper Puller / Installer tool kit is suitable for daily engine builder and service center use. Puller features a premium bushing and pivot center tool with heavy-duty flange plate for smooth damper removal. Accompanying stud sizes include 3/8-16x2, 3/8-24x2, and 5/16-18x2 for a wide variety of applications. Installer features a robust main shaft with large diameter washers, thrust bearing, and nine threaded adapters to provide even damper installation. Adapters fit most popular crankshaft snouts, including GM Duramax, LS and LT series engines. Sizes include: 7/16 - 20, 1/2 - 20, 5/8 - 18, 3/4 - 16, M12 x 1.50, M14 x 1.25, M16 x 1.50, M16 x 2.00, and M18 x 1.50. Puller flange, installer main shaft and adapters are CNC precision machined from 4140 hardened high strength steel with a corrosion resistant chromate finish. Packaged in a durable injection molded case for easy organization and storage. Made in USA.