Has loose chamfer angles and a shank rectangle part, and precisely finishes the hole after passing the drill hole and the rough reamer.Work material: Cast iron, carbon steel, alloy steel, tool steel, stainless steel, aluminum alloy.Number of Blades:6Cutting Diameter (mm):10.95Blade Length (mm):75Total Length (mm):140Shank Diameter (mm):10.95Corner opposite side (mm):8.5High Speed Steel (HSS)