2100372 MAJOR SWIVEL REPAIR KIT GP HAMMERHEAD (5704)The 2100372 is a Hammerhead Major rebuild kit for new style General Pump Swivels that have a Grease Fitting on them. For both the 18 inch & 20 inch GP Hammerhead Surface Cleaners. If your swivel has a snap ring at the bottom, this is NOT the correct kit. Refer to GP2100279 for the old style kits. This Kit only fits new style Swivels (3 Screws & Splash Plate on Bottom). For Grease Fitting Style Only Spec Sheet