Irwin Impact Performance Series square recess bits are engineered for maximum durability when used with impact drivers. The precision-machined tip geometry delivers superior fitment to reduce stripping and cam-out on Robertson-style fasteners.

• #1 square recess drive tip for small screws and fasteners
• 1" length insert bit with 1/4" hex shank
• Heavy-duty S2 tool steel construction
• Cold-forged for maximum strength and torque resistance
• Black oxide finish resists corrosion
• Optimized torsion zone absorbs impact torque

Tip: Square recess bits provide excellent grip and reduce cam-out compared to Phillips. The #1 size is ideal for smaller fasteners and trim work.