Size - Cutting Blade Diameter: 1mm / 0.039"; Shank Diameter: 3.175mm / 1/8"; Cutting Blade Length: 10mm / 3/8"; Overall Length: 38mm / 1-1/2" Material - Made of premium tungsten carbide, the CNC end mills feature excellent hardness, sufficient bending strength, wear resistance, durability and good performance in milling and cutting to ensure high working efficiency. Features - Blue coating increases hardness, reduces friction and heat, improves lubrication and protects bits from rust and corrosion. It provides longer tool life, higher wear resistance and smoother chip evacuation. The surface is very clean, neat and without defects. Applications - Suitable for PCB, plastic, wood, aluminum, copper, stainless steel. Ideal for precision milling, profiling, grooving, engraving and other CNC machining operations. Sharp cutting edges ensure clean cuts, accurate dimensions and minimal vibration. Note - Milling cutters are used on CNC machines, precision engraving and milling machines. When inserting the milling cutter into the collet, make sure it is properly inserted and clamped. Correct adjustment of cutting speed and feed rate is very important for efficient and accurate cutting.