Makita B-49622 Impact GOLD 3 Piece Assorted Double-Ended Power Bits, 2-1/2" One bit with two magnetic tips for quick bit changes Ideal for driving screws in a wide variety of heavy-duty fastening applications including deck building, framing and installing plywood subfloor Precision-fit tip engineered to prevent "cam-out" and stripping High-quality steel engineered for use with impact drivers Designed exclusively for high-torque impact drivers