☞ High-quality quenched steel, high-precision, wear-resistant, smooth chip removal, and good performance. ☞ Internal cooling system, high drilling efficiency. ☞ No need to drill the center hole in advance, saving processing time. ☞ Processing range: carbon steel (45# steel), alloy steel, stainless steel, cast iron and heat-resistant alloy, etc. ☞ Scope of application: Irregular surface can be processed. Concave or convex, inclined face, boring and cross hole, etc. UPC 747388945492 ASIN B09JSJR6VJ Brand Name GBJ Unit Count 1.0 Count Part Number GBJ Manufacturer GBJ Material Type Alloy Steel, Carbon Steel Tool Flute Type Straight