BLU-MOL Standard Tungsten Carbide Hole Cutter 1-9/16" Square Shank for Metal Cut
They are light, smooth cutting entry with great boring speed. These are for cutting stainless steel, steel, aluminum and cast iron up to 3/16 in. (4,5 mm) thick. Drill Bit Type: Hole Saw. Drill Bit Type(s) Included: Hole Saw.