Engine Piston Ring Compressor Tapered Fits 4.310 Inch Piston Bore Aluminum Red Anodized Proform Engine Timing Cover Simply attach the boss cutter

Simply attach the boss cutter to an arbor press with the included adapter/guide

To assure proper piston ring end-gap

3/8 inch X 3/8 inch

Fits 326-455 Small Block And Big Block Pontiac Engines

Engine Piston Ring Compressor Tapered Fits 4.310 Inch Piston Bore Aluminum Red Anodized Proform Engine Timing Cover Simply attach the boss cutterThe PROFORM tapered ring compressor is an affordable an easy way to install your pistons! By creating a slight squeeze on the piston ring the compressor eases the piston into the cylinder bore. Manufactured for engine blocks with studs. Sold individually. Product Details: Engine Piston Ring Compressor Tapered Fits 4. 310 Inch Piston Bore Made From High Quality Aluminum Red Anodized Finish Sold As Each