Bravex Grease Gun With Quick Release Coupler:B0D1C1X3WH. The issue is a nature of the regular greas gun and regualr nozzle, it is caused by the kept pressure in the hose/nozzle which will make the coupler clamp the zerk fitting tightly still, as long as there is no kept pressure in the hose/coupler, it will be easy for the user to remove the hose/nozzle from zerk fitting.