The wider design of these camper hold-down brackets means that they will fit the newest full size pickups. There is No drilling required and installation is quick, easy and secure, simply tighten 2 bolts. There are no projections into the wheel wells. Hold-downs are finished in powder coated black and have an extra wide clamp for exceptional holding strength. Made of heavy 3/8 inch x 3 inch steel they will fit most of the newer full size trucks. (Minimum space under lip of truck bed side wall should be 2 inch. **These will NOT fit step-side beds, some double-wall beds or Dually beds). *{Please call with your vehicle information if you have any questions concerning fit application and we will be happy to help you}. Includes: 4 hold downs, hardware and pads. Dimensions: 3/8 inch thick x 3 inch. 1 set of 4 per package.