Description: 1)Standard: DIN, ANSI 2)Material: Carbon Steel C1022 3)Diameter: 3mm~10mm, 1/4#~3/8# 4)Length: 4~100mm, 1/2"~4" 5)Finish:black phosphated, grey phosphated, nickel, dacroment 6)Packing:Box, carton, bag, pallet