Steel Dragon Tools 2-3/16" x 2" High Speed Steel Annular Cutter with 3/4" Weldon ShankThe Steel Dragon Tools 2-3/16-inch high-speed steel annular cutter. This bit will quickly and safely cut holes in steel. This bit has a 2-inch cutting depth with a 3/4 in. Weldon shank. Features: SDT annular cutters will drill large holes up to ten times faster than regular drills bits. Bit Size: 2-3/16 in. Cutting Depth: 2 in. 3/4 in. Weldon Shank Machine-finish hole with no reaming needed when using lubricant. Make overlapping holes, slotting holes, and edge cuts. Bit size is etched on each cutter.