General description DEWALT DT2154 EXTREME T Shank Metal Cutting Blades are designed for fast and efficient cutting in various metals. This pack includes three blades that can handle steel up to 6mm thick, as well as aluminium, copper, brass, and other soft metals ranging from 3-6mm thick. Technical specifications Type: T Shank Metal Cutting Blades Material compatibility: Steel (up to 6mm), Aluminium, Copper, Brass, and other soft metals (3-6mm)