General description This 5Pcs HSS Hole Saw Kit is designed for efficient metal drilling, capable of cutting round holes in various materials including stainless steel, mild steel, iron, aluminum, copper, brass, and plastic sheets. The set includes five hole saws with diameters of 16mm, 18.5mm, 20mm, 25mm, and 30mm, making it versatile for different applications such as installing locks and knobs in doors and cabinets or drilling larger diameter holes through desks. Technical specifications Material: High Speed Steel Sizes included: 16mm, 18.5mm, 20mm, 25mm, 30mm Compatibility and accessories Compatible with hand-held electric drills, vertical electric drills, and mobile belt magnetic drills Installation Designed for opening holes in stainless steel and aluminum round tubes Suitable for cutting through steel plates, iron plates, and other thick materials Usage Ideal for cutting steel, stainless steel, copper, brass, aluminum, fiberglass, and formica Efficiently removes chips to avoid