The Greenlee® Quick Change Arbor provides much more than just rapid change out of hole saws. Seeing is believing and once you try it, you'll never want to use any other arbor again with the new Greenlee Quick Change, you'll also have faster slug removal, eliminate the bite of a saw crashing into steel, benefit from better ergonomics and not have to deal with the obstructed view of the hole saw. Not to mention, only one arbor is required from 7/8 to 6 in. Coupled with our heavy duty hole saws, no combination.