Draper 08443 PRC50/175 Piston Ring Compressor, 50 175mm, Height 3"

These piston ring compressors gently compress piston rings into position, reducing the risk of damage to components during installation.
They are key operated with a ratchet mechanism and safety valve to allow secure rapid compression and control.
Made from tempered spring steel, and complete with a steel tensioning key.
Simple thumb release locking mechanism.
Capacity 50-175mm (diameter).