Buyers Products Square Bend U-Bolt Kit With Tie Bars And Hardware Is A Complete Kit For Mounting A Body Or A Truck Box To Your Truck Chassis. The Kit Features Durable Grade 5 Hardware And Is Available In A Variety Of Lengths. It Contains The Following: Four Square Bend 5/8 In. U-Bolts, Eight 5/8 In. Hex Nuts, Eight 5/8 In. Split Lock Washers And Four 1/2 In. Thick Tie Bars. Tie Bars Are Forged Steel Construction For Superior Strength.