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The Irwin® Impact Screwdriver Bits are specifically designed for use in high torque impact drivers. They are manufactured from heavy-duty, high-grade steel and have a 3 times longer life compared to standard screwdriver bits. Their precision tip geometry delivers superior fitment, reducing stripping and cam-out.The bits are Power Groove designed for compatibility with IRWIN® Impact Performance Series™ magnetic screw-hold attachment.This set contains 5 x PH2 screwdriver bits and are supplied in a moulded ABS resin case.Additional Information:• Set Type: Phillips• Pack Qty.: 5