Cuts the metal instead of grinding it like abrasive wheels, so the finished product is smoother and cooler to the touch. The metal cutting blades also last significantly longer than abrasive wheels making the cost per cut lower.IRWIN Tools Metal-Cutting Circular Saw Blade, 10-inch, 80T (4935561). The item "IRWIN Tools Metal-Cutting Circular Saw Blade, 10-inch, 80T (4935561)" is in sale since Tuesday, November 15, 2016. This item is in the category "Home & Garden\Tools & Workshop Equipment\Power Tool & Air Tool Accessories\Saw Blades\Other Saw Blades". The seller is "hardwareny" and is located in Middletown, New York. This item can be shipped worldwide.