Piston Ring Compressor Set

A professional-grade piston ring compressor set engineered for the precise installation of piston rings during engine assembly.

For pistons sizes from 2-7/8" to 4-3/8" (73mm to 111mm)
. The ratcheting pliers' jaws are lockable to compress in small increments
. The pliers can work vertically and horizontally against the piston according to the
  position.