Irwin® Speedbor® Max Speed™ Drill Bits Set, Tri-Flute, Imperial, 1/2 in Minimum Drill Bit Size, 1-1/8 in Maximum Drill Bit Size, 4 pc, Specifications: 4 in Shank Length
Features
- 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
- Includes an Irwin® Pro set case made of durable molded ABS resin, so it can hold 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
- Wood drilling application
