Chip board screw 1.Standard:GB,DIN,ANSI,BS,JIS 2. ... steel 3.D:M2.5-M6 4.L:10-300mm Chip board screw 1.Standard:GB,DIN,ANSI,BS,JIS2.Material ... zink,black zinc4.Thread: 1 cutting, 2 cutting 5.Point: sharp point ,6.Package: plastic bag with paper lable, small box ... business.Any questions,pls feel free let us know.Thanks Chip board screw