Superior quality and packing model. Drywall nail DIA: from 3.5mm~4.8mm (#6~#10) Length: from 15mm~150mm(5/8 inch ~ 6inch) Material: C1022,ordinary material Description:Phillips bugle head,coarse thread,fine thread Surface treatment:black and grey phosphate,yellow and white zinc plated Packing:25 kg/carton bulk packing,small box Drywall Nail