With a range of 3-1/2" (88.9 mm) to 7" (17.8 cm), this ring compressor utilizes a spring clutch to provide a proper fit on the piston and a positive locking action. This mechanism eliminates common ratchet problems to maintain consistent tension during engine service. The 14 oz (396.9 g) tool provides the specific grip required for secure piston installation.

With a range of 3-1/2" (88.9 mm) to 7" (17.8 cm), this ring compressor utilizes a spring clutch to provide a proper fit on the piston and a positive locking action. This mechanism eliminates common ratchet problems to maintain consistent tension during engine service. The 14 oz (396.9 g) tool provides the specific grip required for secure piston installation.