Replace your factory u-bolts with these zinc plated corrosion resistant Tuff Country 27854 Ford F250/F350 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: 1980-2004 Ford F250 4WD (Lifted w/3-4 inch blocks) 1980-2004 Ford F350 4WD (Lifted w/3-4 inch blocks) 2005-2016 Ford F250 4WD (Lifted w/3-4 inch blocks) 2005-2016 Ford F350 4WD (Lifted w/3-4 inch blocks) Tech Specs: Bolt Diameter: 5/8 Inch Inside Diameter: 3.625 Inches Length: 14.5 Inches Bend Type: Round