BiruGear 6pc Diamond Hole Saw bits Tools for Power Drill , 5/32-Inch by 1/2-Inch Hole sizes-5/32-Inch, 3/16-Inch, 1/4'', 5/16'', 3/8'' and 1/2-Inch Nickel plated-Diamond coating Superior performance-Great for holes in marble, Slate, Glass, Tile etc. 6pcs tools with Case compatible with SE DH6HS Set