Ideal for making 90-degree notches in sheet metal up to12 gauge. Features 5″ high chrome blades with an adjustable gap for precise cutting a wide range of thicknesses. Notches larger than 5″ x 5″ can be made in multiple hits. Cast iron frame that just will not flex or deflect. Large cast iron table with both inch and metric scales. Blade stops for repetitive work. Includes air regulator, filter, foot control with operation up to 50 strokes per minute, and clear safety guard.