Milwaukee Electric Tool 49-56-0233 Electric Bi-Metal Hole Saw, 4-1/2"

The product is easy to use From the Manufacturer MilwaukeeElectric Tool Corporation introduces Ice Hardened hole saws, a new generationof hole saws that offer up to 50-percent longer life than the competition andare ideal for metal and wood cutting in a wide variety of HVAC, electrical,plumbing and maintenance/repair applications. Milwaukee Ice Hardened productsutilize a proprietary cryogenic hardening process that improves upontraditional heat treat processes. Unlike surface coatings that wear away,cryogenics harden to the core by minimizing soft metal (austenite) andcreating more hard metal (martensite). The result is a product that is moreconsistently hard throughout, resulting in life up to 50-percent longer thanthe competition. Milwaukee Ice Hardened hole saws also feature Matrix II bi-metal construction for greater durability and a unique precision-ground toothgeometry for faster cutting. A positive rake angle cuts more aggressivelywhile deeper gullets quickly remove chips. A radiused back face reduces stresson the teeth, ensuring that the blade delivers optimum life and speed.Functional slot geometry allows for a standard slotted screwdriver to fitcompletely underneath the plug for easier plug removal.