Thread: fine & corase. Srew size:3*16 - 6*130mm. Drywall screw finish:good black. Wood screw head drive: pan and flat. Item No.:FC50http ... .cn Material:steelFinish:black or gray.Type:screw, wood screw, drywall screw, furniture screw, flat screw, metal screw, steel screw, cabinet screw, door screw, furniture hardware. Advantage:Temax adopt high ...