Lheng BI -Metal Wood Hole Saws Bit Tooth Cutting for Cornhole Board Metal Plastic Fiberboard 90mm/3.54?

The hole saw should work with electrical drill machine, here is not included.Be careful to avoid skipping of the cutter when using a hole saw, this can ruin the finish of your case. Notice: Please remove the spring on the pilot bit when you are drilling a hole on the materials with over 10mm thick. And please add the cooling liquid when drilling. The temperature will be so high when the hole saw working. The cooling liquid should be added to lowering the temperature. Otherwise, the drill bit may be broken due to high temperature.