Alpha Katana Blade - The Ultimate Dry Blade for all Tiles. Size: 6". Max RPM: 10,100. Arbor(s): 7/8", 5/8", ◊. For use on: Stone Cutter/Angle Grinder. The ALPHA KATANA is the Tile Installer's Choice for Dry Cutting. Specially Designed for Hard Porcelain Tile and Sintered Slabs. Best Dry Cutting Tile Blade with Minimal Chipping. Hybrid Dry Saw Blade for All Tiles. Fits on Most Popular High-Speed Angle Grinders. Great for Porcelain Paver Tiles. Can Be Used Wet or Dry.