Tridon 4 Jaw Hydraulic Coupler Pack Of 10 24133 921618 Teng 1 2in Dr Punch Plate 140441 9 921618 Teng 1 2in Dr It has high heat resistance and is suitable on porous and non porous surfaces making it ideal for a wide variety of applications loosen the sleeve to adjust the tension and avoiding damaging the grease nipple Type: Hydraulic coupler 4 jaw (hand operated) Thread: 1 8 BSPT Pressure: 42 fully hardened spring steel jaws for longer service life Incorporates a spring loaded ball check mechanism which helps retain pressure Advantage: 4 jaws allow greater working angle Hardened body withstands high pressures without deformation