Irwin 1856841 SPEEDBOR BG 6PC BOGO

6 Piece Set - 6 in. Speedbor Groove Bit. Bit Diameter: 3/8 in. Length: 6 in. Shank Size: 1/4 in. Wood Boring Spade Bit. 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. Drill bit set includes 3/8", 1/2", 5/8", 3/4", 7/8" and 1" drill bits.