Description of Spyder Rapid Eject 3.25-Inch 600036
New Rapid Core eject holes saws allow you drop out the core at the touch of a button. Carbide tipped for exteneded life and clean cuts. Cuts 5x faster than standard hole saws. Cutting depth of up to 2".
Received in 2 days. Used on Hardy Plank for outdoor light boxes (pancake boxes). Works great. This item also fits a standard 3/8 mount, but I have a Spyder mount and it's great too. An electrician should have an item for an endurance board.
I have bruises from the recoil of this hole saw. When it snags, it spins the drill so hard that the drill spins and hits the closest object, like my forearm. Also, the holes it cuts in 2x4 are rough and ugly. Definitely a fine work tool. OTOH, it pits and it's a lot easier to clean the core than other pits I've used. And it seems just as sharp after a few holes. It just gets stuck too often.