The Starrett Sheet Metal Hole Saw Kit is specially designed for cutting stainless steel, high alloy steels, non-ferrous light metals, and reinforced fabrics with ease. It offers much faster cutting speeds than traditional bi-metal hole saws, making it ideal for high-efficiency production cutting. The kit is particularly suited for use in drills with limited speed control, ensuring optimal performance even in environments where precise speed adjustments are not possible. Body material is steel