Professional-grade diamond hole saw engineered for wet cutting applications. The 21mm diameter bit delivers precision drilling through tile, porcelain, and glass without chipping or cracking. Features ½" BSP threading for secure attachment to standard power tools and water-fed systems. Diamond-coated cutting edge ensures durability and clean, accurate holes every time. Ideal for installers and contractors tackling demanding tiling and glazing projects. Wet cutting capability reduces dust and extends tool life.
