Double set screw with Allen wrench. Recommended for all 1/4″ round shank drill bits requiring extra reach. Follows 5/8″ and larger bits through the hole. 1/4″ shank. Only fits round shank Speedbor or Do it Best brand bits.
Irwin Speedbor Spade Drill Bit Extension 12 Inch
Double set screw with Allen wrench. Recommended for all 1/4″ round shank drill bits requiring extra reach. Follows 5/8″ and larger bits through the hole. 1/4″ shank. Only fits round shank Speedbor or Do it Best brand bit.
- Locks into place with allen wrench
- Ideal for drilling hard-to-reach places
- Compatible with quick-change, hex, and round shanks
- 12 Inch
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