ITEM NAME:Piston Compressor with Installer Ratchet Plier Remover Expander Engine U UER.Product list: piston ring pliers 1,Piston Ring Compressor 1, wrench 1. Piston ring compressor size: 7.5 5.6CM. Piston ring compressor adjustable range from 53mm to 175mm. Piston ring clamp size: 17CM.