Take the struggle out of trying to grease fittings on lower ball joints and similar hard to reach places with the STEELMAN 06135 . Attaching to any standard grease gun hose or extension this coupler lets you access fittings in spaces too confined for regular couplers. The 90 degree angle of the coupler easily slides onto fittings and has a built-in seal that keeps the fitting held tight making it a great general purpose coupler especially for older style grease guns where it helps to have both hands available.