The MILWAUKEE® 1-3/8" Diamond MAX™ Hole Saw delivers up to 10X longer life when cutting tile, stone, and glass. Diamond MAX™ Hole Saws offer best-in-class performance, with higher grade diamonds for maximum heat and fracture resistance. An improved continuous brazed edge provides clean, superior joint strength, and better diamond retention when cutting hard, abrasive materials. The Diamond MAX™ Threaded Hole Saw features large slot geometry for easy plug removal. Designed as the single cutting solution for all tile, stone, and glass applications, Diamond MAX™ 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.