06 Series Ø 4.8 mm | Countersunk Head | Steel | ERSCSK06-20G 30.18 − 33.35 mm Grip Range, Zinc Finish
08 Series Ø 6.4 mm | Countersunk Head | Steel | ERSCSK08-20G 30.18 − 33.35 mm Grip Range, Zinc Finish