3/16" x 4" long Groo-V Tip Granite, Marble and Porcelain Multi-Purpose Drill Bit - Pack of 25

• TILE • MARBLE • GRANITE • PORCELAIN • MASONRY • CAST IRON • HARDENED STEEL • Designed for Drilling Marble, Granite, Porcelain Tile, Hard Metal, Plastic, Wood, Masonry Percussion or rotary-only, the Groo-V Tip bit makes holes in almost all materials! Engineered for drilling hard materials, these specialized Ram Tip Bits have a serrated carbide tip, which penetrates faster - up to 50% faster than standard masonry bits! Point Diameter: 3/16 in (5 mm) Shank Diameter: 3/16 in (5 mm) Overall Length: 4 in (101.6 mm) Drilling Depth: 2-3/8 in (60.32 mm) Pack of 25 Note: A drill press - supported drill motor is recommended for drilling hard metal. Shank Diameter 3/8" and larger have 3 flats on the shank to reduce the possibility of slipping in the chuck.