Designed for dry drilling in masonry Drilling into the toughest construction materials is a hard job, but with the PRO Core Cutter dry you can be sure you'll get it done. We made it durable and sharp enough for anything you encounter. Underpinning the quality and durability of the PRO Core Cutter dry is its high-quality diamond grit set in a premium metal matrix optimised for a long life and great performance. Fits 1/2-inch threaded diamond drills Features and Benefits: • Designed for dry drilling in masonry • Fits 1/2-inch threaded diamond drills • For drilling in various construction materials, eg stone, brick, reinforced concrete, and other common building materials and composites • Highly efficient for construction workers: Long Life Specifications: Diameter mm: 117 Working length mm: 150 Number of segments: 6 Segment height mm: 7.0 Shank: G 1/2"