General description Use the Car Piston Ring Pliers and 3-inch Piston Ring Compressor to efficiently install piston rings in your engine. This tool is designed to prevent damage during installation, ensuring that the piston and rings fit perfectly into the cylinder without bending or harming any components. Technical specifications Material: Manganese steel clamp, spring steel clamp Adjustable size: 3 inches Piston ring compressor range: 53 mm - 175 mm Compatibility and accessories Suitable for small engines such as push mowers and riding mowers Large enough for tractor pistons Packing list: 1 x Piston Ring Compressor, 1 x Piston Ring Pliers, 1 x Wrench