12MM RotaCut™ Hole Cutter. For materials up to 1/4 thick. Produces clean burr-free holes 3x faster and lasts 10x. For use with arbor 11088, 11089 or 11006. . Produces clean burr-free holes quickly in sheet metal and plate materials. Cuts holes 3 times faster and lasts up to 10 times longer than twist drills or hole saws. Use in hand-held drills or drill presses. For materials up to 1/4 (6.4mm) thick. Requires arbor: 11088 or 11008. Made in USA.