A: Product: The sort of material you'll be reducing will decide the kind of hole noticed you may need. One example is, When you are chopping Wooden, you will need a bi-metal hole saw. If you're cutting metal, you'll need a tungsten carbide hole saw. Dimension: Hole saws are available https://hole-saw-supplier71593.blogozz.com/34534455/an-unbiased-view-of-wholesale-hole-saws