" JWH " 306289 DO-IT-BEST/HWI PRODUCTS

12" EXTENSION BIT

• Irwin Speedbor Wood-Boring Drill Bit Extension
• 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 hole.
• 1/4" shank.
• Only fits round shank Speedbor or Do it Best brand bits.