FITMENT: Running Boards Compatible with 1999-2016 Ford F250 F350 F450 Superduty Crew Cab.Only Compatible With Crew Cab. Please Check The Cab Size Before Purchase. MATERIAL: Made With Heavy Textured Powder Finish Coated Steel.Step Pads Have Special Non-slip Tread For Superior Traction. WIDE DROP STEP: Drop Down Style, 3.5 Inches Drop Off Making It Easier To Enter And Exit. Durable Non-slip Steps Provide More Protection. STRENGTH: Maximum Load More Than 450 Pounds.3" tube Make The Lesser Gap Between The bar and Truck Frame. SIMPLE INSTALL: No Drilling Or Modification Is Required. Include Two Steps ( One Left And One Right )& Mounting Brackets & Hardware & Installation.