The BRIGGS & STRATTON 692786 Engine Ring Set Oversized .020 helps restore proper engine compression and support reliable performance after engine rebuilding. This replacement piston ring set is designed for compatible engines with a .020-inch oversized cylinder bore, creating a secure seal between the piston and cylinder wall. It works by maintaining compression, controlling oil consu... https://www.wholetoolbox.com/briggs-stratton-692786-engine-ring-set-oversized-20