IRWIN SPEEDBOR EXT 6IN
• Old style • Use with 1/4in shank bits • Includes key • 6in length >> Spade drill bit extension 6in. For all wood bits with 1/4in round shanks; three flats on shank. Follows 5/8in and larger bits through hole. Heavy-duty; double set screw type; adds to regular bit lengths. Forged of finest quality tool steel. Allen wrench included.