Diamond Plus™;;; 1-3/8" Hole Saws deliver best-in-class performance, with higher grade diamonds for maximum heat and fracture resistance. An improved braze provides superior diamond retention when cutting hard, abrasive materials while large slot geometry allows for easy plug removal. Designed as the single cutting solution for all tile, stone, and glass applications, Diamond Plus™;;; offers the lowest cost-per-hole on the market. Use it with standard hole saw arbors or with the Angle Grinder Adapter (49-56-7103), or Retractable Starter Bit (49-56-8025) for even greater productivity and ease of use.