1 * Piston ring compressor 1 * Wrench Working Principle Robust spring steel housing to compress the piston ring in place Make the components can be easily inserted into the holes without the risk of damage. Piston Ring Installation and Removal Tool Ratchet piston ring compressor, made of spring steel material, nickel-plated surface treatment, there are three sizes to choose from, namely 3", 4" and 6", which can be used for the removal of pistons on lawn mowers and tractors And installation, not easy to slip, not easy to break, save time and energy, easy to use Xastro Piston Ring Compressor Tool 3" Piston Ring Compressor Tool 4" Piston Ring Compressor Tool 6" Piston Ring Compressor Tool Item Weight 0.642 pound Item Weight 0.721 pound Item Weight 1.261 pound Item Material Spring Steel Item Material Spring Steel Item Material Spring Steel Item Adjustable Diameter 2"-6.9"(53mm to 175mm) Item Adjustable Diameter 2"-6.9"(53mm to 175mm) Item Adjustable Diameter 2.4"-7.6"(60mm to 195mm) Item Dimensions 3.622 X 3.347 X 2.48 inches(LxWxH) Item Dimensions 4.252 X 3.386 X 2.874 inches(LxWxH) Item Dimensions 6.38 X 3.5 X 3.27 inches(LxWxH) How to use the Piston Ring Compressor Tool？ Place the lubricated piston in the cylinder, tighten the compressor, and gently tap the piston into the hole with a rubber hammer while applying downward pressure to the compressor. Why choose Xastro？ Xastro places a high value on the customer experience and strives to create products that provide an exceptional user experience.