The Piston Ring Compressor Installer Tool is expertly designed for precision and ease of use. Specifically crafted for the Cummins QSK23/QSK78 CAT 35 engine, this tool boasts a bore size of 170mm. Whether you're a professional mechanic or a DIY enthusiast, this compressor tool ensures efficient installation of piston rings. Experience seamless performance with this high-quality, reliable tool.