Features. DoubleLok Technology ensures both ends of bit lock securely in impact drivers and quick-change chucks enabling use of two tips from one bit for added convenience. Precision tip geometry delivers superior fitment reducing stripping and cam-out. Power Groove designed for compatibility with IRWIN Impact Performance Series Magnetic Screw-Hold Attachment. Manufactured with heavy-duty cold-forged high-grade steel to withstand high torque output. First Tip - T25. Second Tip - 2PH. Size - 4 in.

• DoubleLok Technology ensures both ends of bit lock securely in impact drivers and quick-change chucks,
• Precision tip geometry delivers superior fitment, reducing stripping and cam-out
• Power Groove designed for compatibility with IRWIN Impact Performance Series Magnetic Screw-Hold Attachment
• Manufactured with heavy-duty, cold-forged, high-grade steel to withstand high torque output
• First Tip - T25

DoubleLok Technology ensures both ends of bit lock securely in impact drivers and quick-change chucks,Irwin Unibit