Replace your factory u-bolts with these zinc plated corrosion resistant Tuff Country 27850 Ford F150/Bronco u-bolts. Designed specifically for lifted vehicles. This kit includes (4) u-bolts along with nuts and washers.Details: Rear Axle U-Bolt Kit Zinc plated to resist corrosion (4) U-bolts, nuts and washers Designed specifically for Lifted vehicles Made In The USA Sold As A Kit Fits: 1980-1996 Ford F150 4WD (Lifted w/2 inch blocks) 1980-1996 Ford Bronco 4WD (Lifted w/2 inch blocks) Tech Specs: Bolt Diameter: 9/16 Inch Inside Diameter: 3.5 Inches Length: 12.625 Inches Bend Type: Round