Drywall Screw 
Material:C1022
Main 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 less damage to wood and are easier to remove and even be reused.  More and more widely used in wood,instead of wood screw,metal,all kinds of board...