... 2:Surface:zinc plated, black,plain 3:Standard:DIN/ANSI/GB Tire bolt 1:Material:carbon steel,stainless steel 2:Surface:zinc ... plated, black,plain 3:Standard:DIN/ANSI/GBTire bolt1:Material: ... steel 2:Surface:zinc plated, black,plain3:Standard:DIN/ANSI/GB Hexagon head bolt specifications, galvanized, blue and white zinc, round, square ...