Spade Bit Set Contents: 1/4" through 1" Spade Bits in 1/16" increments w/rack (13pc) 6" 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
