Coarse Threaded Drywall Screws Shijiazhuang Sunshine I/E Trade Co., Ltd. Base Info Model NO.:drywall screwsMaterial:Carbon SteelHead Style:RoundStandard:DINThread Type:Coarse ThreadColor:Black,Silver,Grey,YellowOrigin:China Description Pre:Copper Stud/Copper Bolt Next:Kf Vacuum Bellows