Dual auger Stud Bits are designed for use in a hand bit brace or a 3/8" or larger electric power drill and are used for fast and accurate boring in soft or hard woods. Single flute design with single cutter, an outlining spur, and a self-feeding fast pitch screw point. Set includes: 1/4", 3/8", 1/2", 5/8", 3/4", 1"
