... 2, High quality, competitive price 3, High technic heat treatment U bolt for BPW1, Material : 45#(SAE1045) 40Cr(SAE5140) 35Crmo(SAE5132 ... )2, Quality : 8.8/10.9/12.9grade3, Finish : Phosphated,bake paint,Zinc plated ... required, (Drawing or samples)Looking forward to cooperate with you. U bolt for BPW