Drywall Screw Material:C1022 Main Feature:with drilling point, bugle head, phillips drive, coarse/fine Thread Drywall ScrewMaterial:C1022Main Feature:with drilling point, bugle head, phillips drive, coarse/fine Thread Finished:phosphated(black,grey), galvanized(bule,white,color),black oxide Package: 1000pcs/box, 16/20boxes/carton, or as customers' special request. Useage:drywall screw do much ...