Irwin wood countersinks has an adjustable four-cutter counterbore cuts and clears chips quicker for fast, smooth countersinking. Counterbore attaches to flats on shank with two hex screws for a secure fit, and can be adjusted for controlled pilot hole depth.
    
    - Durable and long life
 - Tapered drill with widened flutes for drilling fast, clean pilot holes
 - Easy to use
 
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