1.Name:All kind of dry wall screws 2.Size: 3.5x13----4.8x152 3.Grade: ... :#1018,#1022 Specification of our screw: 1.NameAll kind of dry wall screws2.StandardDIN, IFI, ISO, JIS, AS,BS, EN, SAE ... ,Hex socket bolt,Carriage bolt, Track bolt,Flang bolt,Welded eye bolt2.StandardDIN, IFI, ISO, JIS, AS,BS, EN, SAE, ASTM3 ...