Excellent cutting performance due to reduced cutting resistance from the thin blade and sharp grinding angle, and a new compound tip. Applications: Cutting of general steel materials (iron/aluminum), stainless steel materials (SUS304) Outer Diameter (mm): 180 Number of Teeth: 36 Hole Diameter (mm): 20 Blade Thickness (mm): 1.8 Suitable Materials: Iron, Stainless Steel TRUSCO Part Number: 819-5935 Material: Base Metal: Special Alloy, Tip: Carbide Maximum Operating Speed (min-1 [r.p.m]): 5500 Cutting Capacity (mm) Stainless Steel: 0.5～3 Cutting Capacity (mm) Steel: 1～6 I purchased these, but I accidentally ordered too many. I purchased them for about 3000 yen each. One case is cracked.