1. High-speed steel M-3 bi-metal edges welded to an alloy steel backing plate for heavy-duty cutting. 2. Variable teeth 4/6 TPI. 3. Safe and efficient cutting - the best way to cut large holes and remove chips from the material being cut. 4. Diameter from 9/16" - 8-17/64" (14-210mm). 5. Cutting depth of 1-3/8" (35mm) and 1-7/8" (47mm). 6. Can be used with portable electric or pneumatic tools, vertical drilling machines, lathes, boring and milling machines and other machinery. 7. Cuts through stainless steel and pipes of other materials, nail-embedded wood, hardwood flooring, plywood and plastics. 8. All specifications of the arbor hole saw are the same as the hole saw. The pilot on the arbor hole saw machine is charged extra.