Disston 691188 Master Mechanic 3/16 Inch By 4 Inch Percussion Masonry Drill Bit

3/16 inch x 4 inch, rotary percussion, carbide tipped masonry drill bit, black oxide, steel shank, negative point provides faster penetration when used with hammer drill or drill in percussion mode, percussion carbide tipped bits have beveled edge, recommended for drilling cinder block, common & hard brick, plaster, ceramic tile, glazed tile & wet or dry concrete & for moderate use in marble, granite & concrete over 6000 psi, carded.