Irwin 5/8" x 6" Rotary Percussion Masonry Bit 250740 2PCS
- Carbide tipped for maximum wear resistance and capacity to withstand high-impact
- Black oxide finish for corrosion resistance
- 3/8" reduced shank to fit in all 3/8" drills
These are made by Irwin but come loose and unmarked
Aeronca 44A or Irwin 10D
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