This Lippert Kwikee Step Motor Only is designed for IMGL step assemblies. It works with almost every Kwikee step series, 2006 to current. This replacement motor comes with screws. It helps the step automatically extend when you open your RV door and retract when you close your RV door. Lippert Kwikee Step Replacement Motor For IMGL Step Assemblies Replacement Part For Lippert Kwikee Step Series: 22, 23, 26, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, & 40 Includes: Motor & Screws