Review on 🔧 Bosch HB400 Bi Metal Hole Saw: Unleashing Precision and Versatility by Melvin Man

Doesn't actually cut a 4" hole, it's more like a 4 3/16" hole which is a problem if you try to put a 4 inch vent soffit in it. Even with the help of a drill press, it never reaches the 4 inch size. Also, the teeth are too aggressive to cut old or dense wood. For a new white wood this is fine, but a little stiffer and will continue to bind. Not worth the high price and reflects the Bosch name poorly.