Screwdriver bit 1/4" Four-Wing TORQ-SET 10 mm For hand operation and use in electric and air tools Acc. to DIN ISO 3126, ISO 1173 Hexagon drive as per DIN 3126 - C 6.3 (1/4“) GEDORE special vanadium steel, gun-metal finish TORQ-SET® is a registered trademark of Phillips Screw Company, USA