Standard Length Spade Bit 11/16" Diameter. 6" Shank Length. 1/4" Hex Shank Size. Blue-Groove point and cutting edge for faster chip removal - 4x faster than standard spade bits Double cutting spurs scribe the outside of the hole reducing breakout 10% larger shank for added durability Grooved hex shank prevents slipping in drill chuck or bit extension Fits all standard quick change chucks