Drill Bit, 3/16" Dia, 3-3/4" OAL, Spiral Flute, 1-Flute, 3/16" Dia Shank, Straight Shank, Multi-material Drill Bit, IRWIN 4935107 Jobber
IRWIN Multi-material drill bits drill through just about any type of material like brick, block, tile, metal, wood, plastic and marble, they'll even drill through multiple materials at the same time. These versatile bits are designed specifically for rotary drilling, but are tough enough to be used with hammer drills.