Widely Applicable: 16mm hss 1/2 reduced shank drill designed for a broad range of materials in the steel and iron. Suitable for production, maintenance or portable drilling operations. Black Oxide Surface: treated with a wear-resistant black oxide that increases lubricity. Powerful Cutting Ability: this high speed steel drill are suitable for most general-purpose applications and have abrasion resistance and toughness. Efficient: sharp and twisted flute will make drilling easier and more efficient. Precision manufacturing: precise grinding to achieve a high degree of concentricity between the handle and the body diameter.
I was not impressed with these cutting tools, despite their reduced finish .While they do offer good speed, the steel quality was subpar and caused issues with precision drilling. It`s disappointing to see a product marketed for industrial and scientific applications fall short in performance..
I had to drill two holes in metal. This bit really struggled to get through the pre-drilled hole. I had to sharpen it over 10 times to get through those two holes.
Pros
Efficiency: The sharp and curved chip flute makes drilling easier and more efficient.