Description of π Bosch HB425 4-in-1 Bi-Metal Hole Saw
Progressor tooth design cuts faster and lasts longer in wood and metal applications. Reinforced shoulder for added strength and longer life. 8 percent cobalt alloy for longer life and higher heat resistance. Works with standard or Quick Change mandrels (Quick Change requires adapters).
Hubby needed these to drill holes for the corn since his old drill disappeared into the abyss of our garage but they were too expensive in our local gear. It was a great price and just what he needed.
Ideal for installing 4" lights in the kitchen. FYI this does NOT come with a center drill or thread adapter. You will need to purchase it separately or use it from another crown (like me). Very sharp, very durable Went through 3/4" drywall and 1/2" wood paneling like butter with minimal cracking and chipping. Would buy Bosch bits again!
I used this solely to cut 1 dryer vent hole through the plywood paneling in my laundry annex. I bought a Milwaukee brand 2 1/2" arbor hole saw from Home Depot, unscrewed that arbor and used it on this hole saw. Unscrewing the arbor after using a hole saw isn't easy, but I didn't want the extra money for one Spend quick-release mandrel (still) for a hole.