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. With 22.23 mm bore for standard locking nut angle grinders features and benefits bull designed for dry drilling in masonry bull with 22.23 mm bore for standard locking nut angle grinders bull for drilling in various construction materials, eg stone, brick, reinforced concrete, and other common building materials and composites bull highly efficient for construction workers long life specifications diameter d mm 57 diameter d inch 2 1 4 working length l1 mm 35