IRWIN SPEEDBOR 6-Piece Assorted Woodboring Self-feed Drill Bit Set

The Fastest Speedbor ever. Tri-Flute design for faster chip ejection. Cutting spurs have 3 cutting edges for added durability. Full screw tip allows bit to self feed. Grooved hex shank prevents slipping in drill chuck or bit extension. Fits all standard 1/4-in quick change chucks. IRWIN Pro Set Case is made of durable molded ABS resin, and holds up to anything the jobsite throws at it. Case includes a full-length metal hinge pin for maximum durability and long life, and bit identification is simple with easy-to-read size markings.