... with drilling point, bugle head, phillips drive, coarse/fine Thread Drywall Screw Material:C1022 Main Feature:with drilling point, bugle head, phillips ... in cartons.Our company Tianjin Lituo Imp&Exp Co., Ltd. Drywall screw Fine or coarse thread black/gray phosphate philips no.21 ... box, 16/20boxes/carton, or as customers' special request. Useage:drywall screw do much less damage to wood and are easier to ...