IIT 25700 6 Pc Titanium Wood Spade Bit Set Drill Bits 6" Long Boring, Drill bits feature a blue-groove point and cutting edge for fast chip removal. Spade bits use double-cutting spurs that scribe the outside of the hole, reducing breakout. Flat drill bit design features a large shank for added durability. Grooved hex shank helps prevent slipping in the drill chuck or bit extension.