• Opens clogged grease fittings and loosens hardened grease joints • Excellent for maintaining and protecting bearing, control arms, joints, king pins, etc • All steel construction tool is designed to be tapped with a hammer to force a light viscosity oil through the tool into the coupler and finally into the grease joint, breaking up and removing dirt and debris • Built-in hand guard for added safety • Flexible hose attachment reaches fittings in difficult areas • Comes complete with grease coupler for connection onto the grease fitting and (2) spare seals