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). https://elecena.pl/product/27400415/draper-08444-piston-ring-compressor-50-175mm-height-4-08444 2024-12-05 https://elecena.pl/product/27400415/draper-08444-piston-ring-compressor-50-175mm-height-4-08444 2025-03-14 https://elecena.pl/product/27400415/draper-08444-piston-ring-compressor-50-175mm-height-4-08444 2026-07-15 https://elecena.pl/product/27400415/draper-08444-piston-ring-compressor-50-175mm-height-4-08444 2026-08-31