... ,25mmStandard JIS,DIN,ANSI,ISO,BS,GBDriver typePH(+), POZI(*), SLOT(-), PH/SLOT(+-), SUQARE, HEX, 6-LOBE…CoatingPLAINWith coating : TiN coating(yellow ... /box)Origin placedongguan , China (mainland)Produce as your requirement for bolts and nail making