... 2.Length: 50-200mm 3.Finish:zinc plated SpecificationsHex flange concrete screw Size: M6, 8, 10, 12, 16 20Length: 60-300mm ... Finish:zinc platedSlotted Hex Washer Concrete Screw1.Size: M6, 8, 10, 12, 162.Length: 50-200mm3 ... .Finish : Zinc platingHi-lo jagged thread4.Mainly used for buildingAny questions,pls feel free let us know,we ...