Compressor Set Tool Type Piston Ring Application Assemble and Disassemble the Piston Material Metal Mid-Carbon Steel Overall Length 21 1/2 cm Overall Width 42 cm Vehicle Make/Model/Year Universal Number of Pieces 7 For Use With Engine System Includes Clip Pliers. Metal Bands for Piston Rings 2 7/8 in to 3 1/8 in 3 1/8 in to 3 3/8 in 3 3/8 in to 3 5/8 in 3 5/8 in to 3 7/8 in 37/8 in to 4 1/8 in 4 1/8 in to 4 3/8 in Vehicle Make Universal Vehicle Model Universal