1/4" x 4" long Groo-V Tip Granite, Marble and Porcelain Multi-Purpose Drill Bit - Pack of 25 GRT-4-4

1/4" x 4" long Groo-V Tip Granite, Marble and Porcelain Multi-Purpose Drill Bit - Pack of 25 GRT-4-4 If you’re on the job and must drill into tough materials such as Marble, Granite, Porcelain Tile, Hard Metal, Cast Iron, and Masonry, then you understand the importance of a quality bit. The Relton Groo-V bits have a special engineered serrated carbide tip to drill into hard materials up to 50% faster than standard masonry bits! Save yourself time and frustration by buying a quality Relton bit today! Can also be used for speedy drilling into softer materials like Wood or Plastic. 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.

• Designed for Drilling Marble, Granite, Porcelain Tile, Hard Metal, Plastic, Wood, Masonry
• Point Diameter: 1/4 in (6.3 mm)
• Shank Diameter: 1/4 in (6.3 mm)
• Overall Length: 4 in (101.6 mm)
• Drilling Depth: 2-1/4 in (57.1 mm)