DEWALT EXTREME 14PCE IMPACT TORSION SCREWDRIVER BIT SET DT70512T. Impact torsion screwdriver bit set with 2 x magnetic drive guides. Tough heat-treated bits for improved durability and torsion zone for reduced breakage. S2 Steel Blades Suitable for Power Screwdrivers with Impact Mode Torsion Zone for Impact Use Full Fit Bit Heads for Long Life |