Sandflex bi-metal hole saws offer excellent performance in various materials such as wood, plastic, non-ferrous and ferrous steels, including stainless steel. They fit electric drills, both stationary and portable. Side slots allow for quick and easy core removal. The maximum cutting depth is 38 mm, with 4 to 6 teeth per inch. All VIP hole saws are delivered in cardboard packaging with included instructions. The maximum hole size corresponds to the nominal hole saw size plus 1.5 mm, minus 0.0. Extra large sizes include 168 mm and 210 mm with 6 TPI and normal cutting depth, as well as 177 mm with 4/6 TPI, with a maximum cutting depth of 50 mm. All large hole saws cut with a 0° cutting angle for a less aggressive cut.