This Century Drill & Tool hole saw is offered in a 6-in size.
Shark Tooth Bi-Metal Hole Saw
Professional Bi-Metal saws with high speed steel teeth, electron welded to a shatterproof, shock absorbing alloy body
Variable pitch tooth pattern cuts clean through ferrous and non-ferrous metals, wood and plastic
Can be used in portable electric drill machines, lathes, and milling machines