GearWrench KDS2284 Heavy Duty Piston Ring Compressor 2-1/8" To 5"

Use compressor to install pistons 2-1/8 to 5_ (54 to 127mm) in diameter.
Positive lock action provides positive compression and fingertip release. To compress piston ring into grooves, slip the tool over the piston and tighten with L-shaped wrench. Insert piston into cylinder and tap with a hammer to install. Enlarged crimped edge prevents compressor from entering the cylinder.