The milling cutter is made of HSS-AL, sharp and durable, with high bending resistance and abrasion resistance. Sharp and durable, convenient for chip removal, further improve machining efficiency. Please adjust the speed, feed and cutting depth according to actual cutting conditions. Different precision 1. Two-edge: The size of the keyway milled from the two-edge can achieve high precision. 2. Three-blade: A three-blade end mill can not reach the precision of a keyway milling cutter. 3. Four-edged: The four-edged cutting is smooth, and the size of the keyway milled out can achieve high precision. Cutting is different 1. Two-edged: The two-edged are stronger and the cutting efficiency is high. 2. Three-blade: The three-blade is sharper and the cutting speed is fast. 3. Four-edged: The four-edged cutting is smooth and the finish is better. Different vertical feed 1. Two-edged: The two-edged can feed vertically on the workpiece. 2. Three-edged: The three-edged can not feed vertically on the workpiece, and can only feed from the side, or feed while walking. 3. Four blades: Four blades can feed vertically on the workpiece. Descriptions 1.Suitable for CNC data processing center, carved, high-speed machines. Apply to carbon steel, soft alloy steel, die steel, tool steel, cast iron, titanium, aluminum, etc. 2.With high bending resistance and abrasion resistance, exclusive to HIGH HARDNESS, HIGH SPEED CUTTING applications. 3.Sharp and durable, convenient for chip removal, further improve machining efficiency. 4.Make sure work piece and machine are stable,use hydraulic chucks,high quality collet chucks,or shrink fit chucks. 5.Please adjust the speed, feed and cutting depth according to actual cutting conditions.