Double wing spurs reduce vibration while creating easy hole formation. Patented cutting edge for easier and faster wood boring over conventional models. Cutting edge removes chips fast. 1/4' quick change hex shank for use in all universal Quik-Lok extensions. Includes: 6' universal Quik-Lok bit extension, 3/8', 1/2', 5/8', 3/4', 7/8', and 1-1/8' spade bits.