Irwin Speedbor Spade Bits
* Double spur design scribes the hole before the chips are made, producing a cleaner hole and reducing vibration
* Applicable Materials: Wood
* Cutting Edge Material: Tool Steel
* Length Group: Long
* Patented micro-groove cutting edge and spurs produce a smoother hole finish.
* Dimensions: 1/4" hex shank fits all drills and 1/4" quick change adapters.