Fits all Sealed Models with 2103221 rotary head. NEWER-STYLE Swivels ONLY! Major rebuild kit for Hammerhead Swivel Assys. Fits both 18 and 20 inch model surface cleaners. This Kit ONLY fits NEW STYLE Swivels (3 Screws & Splash Plate on Bottom). For Sealed Bearing Style Only (NO Grease Fitting). If your swivel has a snap ring at the bottom – then this is the wrong kit.