Aircraft Tool Supply Threaded Drill Bits #40, #30, #21, #12 (4-Pack);
Aircraft Tool Supply Threaded Drill Bits #40, #30, #21, #12 (4-Pack)

Package of four (4) 1/4-28 Threaded Drill Bits in sizes: #40, #30, #21, and #12. Cobalt steel with black oxide finish.

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Package of four (4) 1/4-28 Threaded Drill Bits in sizes: #40, #30, #21, and #12. Cobalt steel with black oxide finish.

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