Package include 1 x carbide end mill bit(please choose the size you need) Features Excel at working carbon steels (HB225), alloy steels (HB225325), pre-hardened steels (up to HRC55), hardened Steels (HRC4055), cast iron,wood,plastic,graphite Milling Cutter is made of Micro Grain Carbide that is very tough, resists wear and offers high cutting performance TISIN coating lubricates the end mill,superior wear resistance at high cutting speeds Used for side milling, face milling,end milling,finish machining,Roughing machining etc Compatible Engraving machine,CNC production center,Milling machine,CNC milling machene,Mini fresadora Specifications Product Name:Carbide End Mill Bit Material: HRC55 Carbide with TISIN Coated Flute: 4 Flute Cutting Diameter: 5mm(0196inch) Shank Diameter: 5mm(0196inch) Flute length: 13mm(0511inch) Overall Length: 50mm(1968inch) Operation Tips (1) A high-precision, balanced and stable tool holder must be used; (2) The shorter the length of the milling cutter protruding from the chuck, the better When the milling cutter protrudes longer, please reduce the rotation speed, feed rate or cutting amount; (3) If abnormal vibration or noise occurs during cutting, please reduce the spindle speed and cutting amount until the situation improves; (4) When the milling cutter is processing steel, the cold cutting method is recommended to use spray or air jet, and it is recommended to use non-water-soluble cutting fluid for processing stainless steel, titanium alloy or heat-resistant alloy;