Spade Bit Set Contents: 1/2", 3/4" & 1" Diameter Spade Bits 4" Shank Length. 1/4" 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
