1.Name:All kind of dry wall screws 2.Size: 3.5x13----4.8x152 3. ... ,12.9,etc 4.Material:#1018,#1022 Specification of our screw: 1.NameAll kind of dry wall screws2.StandardDIN, IFI, ISO, JIS ... What else of nuts we can offer?1.NameHex head bolt,Square head bolt,Round head bolt,Hex socket bolt,Carriage bolt, Track bolt,Flang bolt,Welded eye ...