Irwin Speedbor 5/8 In. x 6 In. Quick Change Auger Bit Brand_Various diablo's patented variable tooth technology

diablo's patented variable tooth technology provides faster cuts with less vibration

Precision-milled shank eliminates runout and wobble

1/4" Quick Change range now holds insert bits

effortless cuts in some of the toughest wood cutting scenarios

national fine thread

Irwin Speedbor 5/8 In. x 6 In. Quick Change Auger Bit Brand_Various diablo's patented variable tooth technologySpeedbor MAX is the fastest Speedbor. Tri flute design for faster chip ejection. There are 3 cutting edges for added durability and the full screw tip allows the bit to self feed for easier pull through. 1 4' quick change hex shank prevents slipping in drill chucks and bit extensions. Fits all standard quick change chucks and adapters.