The Aviation Piston Ring Compressor features a quick-change design to speed up piston ring installation.
It includes the famous Hastings Ring-O-Matic® pliers and bands that operate in all positions: not just vertically or horizontally. The pliers incorporate a precision locking action for exact holding and quick release.

The complete kit includes the Ring-O-Matic® pliers and one of each of the following size bands: