IRWIN Tools SPEEDBOR Max Wood Drilling Bits, 6-Inch length, 10-Piece (1801022) Description The IRWIN SPEEDBOR Max Speed wood drilling bit is the FASTEST SPEEDBOR EVER. The Speed Tip features a full screw-point that allows bit to self-feed, as well as three (3) cutting spurs for faster, cleaner holes, less breakout, and extended drilling life. The tapered tri-flute design allows for faster chip ejection and less binding. Its grooved hex shank prevents slipping and fits all standard 1/4" quick-change chucks, including impact drills. Features: Wood drill bit set includes bits with three cutting spurs for faster, cleaner holes, less breakout, and extended drilling life Full screw-point tip allows bit to self-feed for ease of drilling Tapered tri-flute design for faster chip ejection and less binding. 1/4" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drills Product Details: Material: Metal Shank Type: Hex Brand: IRWIN Item Dimensions LxWxH: 1.75 x 17.5 x 11.19 inches Tool Flute Type: Straight Material: ‎Metal Shank Type: ‎Hex Brand: ‎IRWIN Tool Flute Type: ‎Straight Minimum Bore Diameter: ‎0.63 Inches Point Style: ‎Screw Point Surface Recommendation: ‎Wood Manufacturer: ‎IRWIN Part Number: ‎1801022 Item Weight: ‎0.16 ounces Item model number: ‎1801022 Is Discontinued By Manufacturer: ‎No Size: ‎10 Piece Item Package Quantity: ‎1 Cutting Diameter: ‎0.08 Inches Tool Tip Description: ‎Self Fedd Tri Flute Accessory Connection Type: ‎1/4" Quick Change Batteries Included?: ‎No Batteries Required?: ‎No Assembled Diameter: ‎0.08 Inches Date First Available: May 3, 2012