General description To compress piston rings for cylinder installation in trucks, tractors, automobiles, and racing engines. This tool set includes a variety of piston rings and a plier for easy operation. Technical specifications Piston Diameter: 62mm-145mm (2.4''-5.7'') Plier Shank Diameter: 9 mm / 0.35" Piston Ring Height: 32 mm / 1.3" Number of Piston Rings: 14 Plier Shank Material: 65Mn Blue Forged Steel Material: Carbon Steel & Iron Compatibility and accessories Includes: 14 piston rings, 1 plier, and a solid storage box Installation Install the correct clamping ring according to the diameter of the piston. Install the clamp ring onto the body of the brake caliper. Use the snap ring to fix the installation ring part of the piston. Hold the clamp handle to ensure the piston ring fully enters the groove while applying a small external force. The piston can then be successfully installed in the cylinder liner. Usage Designed for easy and efficient piston installation. Allows for