With an ergonomic design of the lever, it makes connection and disconnection easy, saving time. It is noted that it is compatible with JBM grease guns ref. 50751 and ref. 50852, but can be used with most manual, battery, or air grease guns and bulk pumps. Compatible with all sizes/shapes and fits all SAE and metric grease fittings. The built-in non-return valve allows it to stop at pressures up to 15,000PSI (1,034Bar). Integrated 1/8" NPT connection. The hardened 3-clamps withstand high pressures without deformation.