Stainless steel with a 1.65 degree mills 4F, fine particulate material, particle size 0.2, helix angle of 40 degrees, gold coating. Standard D4 * 10 * 50 * 4 * 2F, extended specifications D4 * 12 * 75 * 4 * 2F, D4 * 16 * 100 * 4 * 2F. 2 25 major cutting ordinary steel, stainless steel materials. Adapt to ordinary steel 25-38, Shen Dian hardened stainless steel, gray iron, ductile cast iron black, aluminum, titanium, magnesium and aluminum alloys, nickel-based superalloy materials. 3 blade closer to the mirror, smooth edge, good precision and high efficiency. Long life, is the best tool for high-speed machining. 4 Price concessions, quality assurance, please feel free to inquire and negotiate.