The quick install bracket kit reduces the time to install your fifth wheel rails.The custom brackets are designed to match up with your truck frames pre-existing holes.This kit does not include the hardware to attach the fifth wheel mounting rails to the bracket.For this installation you will need the hardware included in the #58058 rail kit.For an installation using used rails with these brackets you will need the #58430 hardware kit.*Hardware kits sold seperately.For use with:11-12 Ford F-250 Super Duty Pickups only, will not fit Cab and Chassis11-12 Ford F-350 Super Duty Pickups only, will not fit Cab and Chassis11-12 Ford F-450 Super Duty Pickups only, will not fit Cab and Chassis2 wire system, convertor not required.