Milwaukee 1-3/8" Hole Dozer Hole Jigsaw Bi-Metal Cups, 49-56-0072

Milwaukee 1-3/8″ Hole Dozer Hole Saw Bi-Metal Cups, 49-56-0072, 045242192991

• Ice Hardened for up to 50% longer life than competition
• Refined tooth form for up to 2 times faster cutting
• Practical slots for faster plug removal
• Matrix II bi-metal teeth for greater durability

Milwaukee Ice Hardened products use 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.RPM mild steel: 250
RPM stainless steel: 125
RPM Cast Iron: 165
RPM aluminum: 375