Lippert Components 3723383 Lippert Kwikee 38 Series Single Electric Step Supports up to 750 lbs Heavy-gauge Steel and Black powder-coat finish for long-lasting durability Solid Steel drive rods and Stainless Steel bushings Sealed wiring connectors stand up to the elements Rise: 7 in; run: 10 in; tread: 24 in; mounting bolt pattern: 8 x 22 in