General description Made of high-quality materials, this piston ring assembly kit includes carbon steel pliers and a spring steel compressor tool, designed for efficient installation and removal of piston rings. Technical specifications Piston ring thickness: 3/64 inch to 1/4 inch (1.2 mm to 6.4 mm) Adjustable sizes: 2-1/8" to 7" (53 mm – 175 mm) Usage Ideal for installing and removing piston rings in car engines and compressors. Professional installation is recommended for optimal results. Features positively adjustable compression and friction brake for enhanced control.