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Extend your reach in tight spaces with this heavy-duty Irwin Speedbor bit extension. The double set screw design securely holds bits in place during drilling, while forged tool steel construction stands up to demanding wood boring applications.

• Length: 12"
• Shank: 1/4" (compatible with round and hex shank bits)
• Material: Forged tool steel
• Double set screw design for secure bit retention
• Follows 5/8" and larger bits through the hole
• Includes Allen wrench for set screws

Note: Designed for wood boring applications. Not for use with quick-change wood boring bits.