Irwin Speedbor 3-Piece Spade Bit Set Pack options:Pack of 1 3M is well-known for creating

3M is well-known for creating innovative products and this item lives up to their reputation

Covered keyway for maximum weather protection

vertical material clamp

corner clamp is perfect for picture frames and smaller projects

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Irwin Speedbor 3-Piece Spade Bit Set Pack options:Pack of 1 3M is well-known for creatingBlue Groove point and cutting edge for faster chip removal. 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. Includes Pro Set case made of molded ABS resin with full length metal hinge pin. Bit identification is simple with easy to read size markings. 4" shank length, 1 4" shank size. Includes sizes: 1 2", 3 4", and 1".