Skyjacker's Radius Arm Drop Bracket Lift Height 5-6 Inch 4.75 Inch Drop is designed to provide an improved ride quality, better handling and increased ground clearance on your 70-76 Ford F-100, 77-79 Ford F-150, and 78-79 Ford Bronco. This heavy-duty lift kit is designed to withstand all types of terrain, and includes 5-6 inch lift heights, 4.75 inch drop, and off-set radius arm bushings. The kit does not include the off-set radius arm bushings, so you will need to purchase them separately. With Skyjacker's Radius Arm Drop Bracket Lift, you'll get the height and clearance you need for your off-road adventures.