Cle-Line 1818 Carbide-Tipped Masonary Drill, High Speed Steel w/ Carbide Tip, Steam Oxide Finish, Reduced Shank, 118° Radial Point, 3/16" (Pack of 1). Oversize carbide tip provides clearance for toggle bolts, anchor screws and expansion drills. Regular helix for easy dust removal and more steel support for the tip. Shank reduced to fit 1/2” drill.