Gurtech G Coupler Grease Gun Quick Release Lock On Grease Coupling - M10 FitmentQuick Release, Lock On Grease Coupler, works with all grease gun types pneumatic, manual and battery. Zerk Nipple Compatibility: Fits all DIN (Metric) and SAE specification zerks nipples). Simply press down the trigger when locking the coupler onto the zerk nipple. Easy clip off, regardless of pressure build up in the line. comes with a leak free, high pressure seal. Max Pressure: 10,000 psi (690 Bar)