Features:
1.Through a special heat treatment, sharp edge, high strength. Can work for 3mm Stainless steel plate and can quickly punching the precise holes in Steel, Stainless Steel,iron, Copper, Brass, Aluminum, Fiberglass, Formica And Other Laminates In Seconds
2.Perfect for installing locks, knobs on doors and cabinets, or drilling large diameter holes through desks, etc.
3.Made from strong HHS high-speed-steel for durability,high hardness, fast cutting, wear high temperature
4.Precision ground teeth for perfect finish cut

Material: HSS / High Speed Steel 
Surface Treatment: Titanium Coated/Stainless Steel