SPEEDBOR Speedbor Flat Bit, 9/16 in Dia.

Features: Patented micro-groove cutting edge and spurs produce a smoother hole finish | Double spur design scribes the hole before the chips are made, producing a cleaner hole and reducing vibration | All bits have a 1/4" hex shank that fits all drills and 1/4" quick change adapters | 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