Detailed Product Description Feature: stud bolts,lifting inserts,hg/t20634 bolts1.Sizes:75mm~500mm2. Drive-under:5.0mm~8.0mm2.Thickness of the finished product: 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm3.Color: black, electroplatingor as customersrequirements4.Optional installation of screws5.Outer packing: a box of a dozen