Cutting spurs have 3 cutting edges for added durability. Grooved hex shank prevents slipping in drill chuck or bit extension. Fits all standard 1/4" quick change chucks. SKU: 40498345 MFG: 3041006 Shop more products by Irwin. Biggest supplier for hand tool supplies. Enjoy lowest price on Hammers & Striking Tools For Boring SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. $31.39 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Sizes: 1/2", 5/8", 3/4", 7/8", 1" and 1-1/4" Tri-flute design for faster chip removal 3 cutting spurs for clean holes with minimal "breakout" Six times faster than standard spade bits Screw tip fully heat treated Hex shank for quick change applications New upgraded wood boring bits WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov FEATURES MFR: 3041006 SKU: 40498345 UPC: 024721092793 Brand: Irwin