... Bolt 1.Material: 40Cr,45# Steel,35CrMo steel 2.Finished: Plating,Phosphating,Oxide Painting 3.Grade:8.8,10.9,12.9 U-Bolt ... kinds of U-Bolt, wheel bolt & nut with different styles and sizes.1>.Material: 40Cr, 45# Steel, 35CrMo steel2>.Surface ... Blue, Red etc., many colors for your choice6>.U-Bolt Type: round, round flat, half-round ,half-round ... bolts according to your requirements. Truck Steel U-Bolt