Profile Shear with right hand blades. Cuts profile and flat materials up to 18 gauge C.R. mild steel, soft non-ferrous metals like aluminum, copper and brass to .090; spiral duct, wire mesh and many other materials. These snips are extremely light and maneuverable at 5 pounds, the KD-446R can cut tight curves at a radius of three inches. The blades are made of high quality steel, heat treated and precision ground.