... sizes finish:nickel plated,zinc plated with or without hardend machine screw with all kinds of head and sizesfasterner,screws,1 ... ,stainless steel,brass7.size:M3,M4,M5,M6,M7,M8,M10,M12,M14,M16,M18,M20,M22,M24,M27,M30Below is ... bulk packing method:Below is middle box packing: machine screw with all kinds of head and sizes