Titen Turbo screw drill bits enable predrilling and installation of concrete and masonry screws. The bits work with the Titen Turbo installation tool and also with drills with a standard, three-jaw-style chuck. These 3/16 in. drill bits are available in 3-1/2 in., 4-1/2 in. and 5-1/2 in. lengths. MDB 3/16 in. x 3-1/2 in. Titen Turbo™ Screw Anchor Drill Bit (Pack of 4800).