Milwaukee 49-56-9668 2-1/8" Hole Dozer Hole Saw with Arbor

Includes:
(1) 2-1/8 in. Ice Hardened Hole Saw; with Arbor Features
Ice Hardened cryogenically treated for up to 50% longer life Optimized tooth form for up to 2X faster cutting Wide, angled & offset slots for easy plug access Bi-metal construction with 8% cobalt for increased wear resistance Arbor included, requires pilot bit SPECIFICATIONS: Hole Diameter 2-1/8 in. RPM Mild Steel 160 RPM Stainless Steel 80 RPM Cast Iron 105 RPM Aluminum 240 Milwaukee Ice Hardened products utilize a proprietary cryogenic hardening process that improves upon traditional heat treat processes. Unlike surface coatings that wear away, cryogenics harden to the core by minimizing soft metal (austenite) and creating more hard metal (martensite). The result is a product that is more consistently hard throughout, resulting in life up to 50% longer than the competition.