U Bolt Shenzhen BYF Semi-Trailer Parts Co., Ltd. Base Info Use:Semi TrailerModel:Bpw 10holes, M22*1.5Hardness of Heat Treatment:Hrc39-44Packaging:5PCS,Box, 10boxes,CartonSize of Pallet:92x81x90Loading Port:Ningbo Description Pre:Self-Drilling Screw With Pan Head Next:SDS (Self-Drilling Screw) With Hexagonal Cap