Threaded shank drill bits are type D adapter style.#27 Cobalt Very Stubby Threaded Shank Drill Bit They are made from M42 8% cobalt and are manufactured to NAS 965 Type "D" specifications..
#27 Cobalt Very Stubby Threaded Shank Drill Bit They are made from M42 8% cobalt and are manufactured to NAS 965 Type "D" specifications. Threaded shank drill bits are type D adapter style..