Check the listing for details. Relton 1/4" Straight-Shank Masonry Drill Bit - Groo-V-Tip - Pack of 25, BGRT-4-4. Condition: New. Listed at 159.00 USD. 1/4" x 4" (overall length) long Groo-V Tip Granite, Marble and Porcelain Multi-Purpose Drill Bit - Pack of 25 GRT-4-4If 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 25Note: A drill press supported drill motor is recommended for drilling hard metal. Hardware Guys is your source for tools and equipment for the heavy construction trades. Please note that orders over $750 will ship Signature Required. "Make an Offer" price offers are only considered on closeout items or for quantity purchases. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment. The purchaser, by bidding on this equipment, acknowledges and agrees to the terms of this disclaimer. CALIFORNIA RESIDENTS:WARNING Cancer and/or Reproductive Harm ? www.p65Warnings.ca.gov