... .Size: M6, 8, 10, 12, 16 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 ...