This 7-1/4-inch 15 amp worm drive circular saw has a lightweight magnesium construction and a magnesium footplate that provides a tough and solid cutting

Evolution RAGE 230, 9-Inch, TCT, Multipurpose Circular Saw is capable of cutting steel, aluminum, wood with nails in it, and plastic. With a 3-1/4-Inch cutting

The DEWALT DCS391 20-Volt MAX Li-Ion circular saw has a powerful 460 MWO.