The Irwin Speedbor 12" Bit Extension adds extra reach to your wood boring bits for drilling through thick materials or hard-to-reach areas. Built from forged tool steel for heavy-duty performance.

• 12" length extends your drilling reach
• Compatible with 1/4" shank bits (round and hex shank)
• Heavy-duty double set screw design for secure bit retention
• Forged tool steel construction
• Includes Allen key for installation
• Follows 5/8" and larger bits through hole
• Compatible with quick-change, hex, and round shank bits

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

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