Irwin Tools FLAT BIT 12" EXT
12" drill bit extension, double set screw with Allen wrench, recommended for all 1/4" round shank drill bits requiring extra reach, follows 5/8" & larger bits through hole, 1/4" shank, Pouched, only fits round shank Speedbor bits, no. 88702, 6" & no. 88601, 12".