Our extended-length hole saws are perfect for fabricators who are tired of wasting time notching with standard depth hole saws. Finally, you can notch without a grinder! Stock up and be prepared for any notching job, even off-angle. Deep Saws are also great for contracting and construction work, able to cut through thick materials without the need for a spade bit or chisel These are our design, and they are imported. The max angle you can notch (from perpendicular, like a “T” notch) on each saw, at the end of the tube (like you would normally notch), without using a grinder like you always have: 1.50 – 60 degrees 1.625 – 57 degrees 1.75 – 54 degrees 2.00 – 48 degrees Fitment notes- These work with many notchers (they have the same threads as any other hole saw). Check your notcher to see if you have room to run these.