1/4 RotaCut™ Hole Cutter (3 pack). For materials up to 1/4 thick. Produces clean burr-free holes 3x faster and lasts 10x. For use with arbor 11088 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 11006. 3 pack of cutters. Made in USA.