Titanium nitride coating on these Pro-Point drill bits offers improved wear resistance which results in an easier drilling and longer life of the drill bit Large flute chambers ground from solid steel prevent clogging 135 degree split point drill tip for fast and efficient penetration of work surface Side tapers ensure accurate and smooth holes Guaranteed free from defects for the normal life of the bit, Manufacturer: Johnson Level & Tool
For optimum versatility, go with this step drill bit from DeWalt. Multiple steps eliminate the need for many special sized drill bits. Its double-fluted design provides optimum speed and accuracy. The flats on the shank prevent bit slipping in the chuck. Size markings provide easy hole identification. The most commonly used steps are highlighted with a polished ring for quick recognition. Hole-Enlarging.
20 Piece Thunderbolt&trade Black and Bronze Drill Bit Sets
For drilling dry concrete, masonry, brick and tile. Fast spiral flutes quickly remove debris from hole. Carbide-tipped for long life. Double Fluted for faster drilling.