Concrete ring saw machine is a specialized handheld power tool designed for deep, precise cutting through reinforced concrete, thick walls, brick, and stone. Unlike standard circular cutters, a ring saw blade does not have a central drive shaft or spindle. Instead, the blade is driven from its outer rim (periphery). This allows a relatively compact 14-inch to 17-inch blade to plunge nearly all the way through, achieving extreme cutting depths of up to 12 inches (300 mm) or more