Irwin 4935109 Multi-Material Jobber th Drill Bit, 5/16 in Drill - Fraction, 0.3125 in Drill - Decimal Inch, 135 deg Point, HSS, Oxide

Irwin Jobber Length Drill Bit, Multi-Material, Series: 4935, Imperial, Drill Size - Fraction: 5/16 in, Drill Size - Decimal Inch: 0.3125 in, 4-3/4 in Overall Length, 3-3/4 in Cutting Depth, 1 Flutes, Spiral Flute, 3-3/4 in Flute Length, 5/16 in Shank, Straight Shank, 135 deg Point, 4-Facet/Split Point, Diamond Ground Carbide Cutting Edge, Through Coolant (Yes/No): No, HSS, Oxide, Applicable Materials: Block, Brick, Marble, Metal, Plastic, Tile and Wood

Irwin Multi-Material drill bits drill through just about any type of material out there brick, block, tile, metal, wood, plastic and marble they will 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.