Lenox Tools 1212040DGHS 40 Diamond Grit Hole Saw, 2-1/2-Inch or 63.5mm The product is Lenox 2.5"Diameter Hole Saw Easy to use The product is manufactured in China Diamond Edge for longer life and speed Fast and Easy Cutting Easy Plug Removal Provides More Holes in Less Time Ideal for Cement board, Abrasives, tile and Stone