Features and Benefits: Installs piston rings from 27/8 to 43/8" (73-111mm).; Includes ratcheting pliers and 6 sizes of 11/2" wide compressor bands. ; Works either parallel or perpendicular to cylinder block. ; MADE IN USA.; Installs piston rings from 27/8 to 43/8" (73-111mm). Includes ratcheting pliers and 6 sizes of 11/2" wide compressor bands. Works either parallel or perpendicular to cylinder block. MADE IN USA.