The Material: HRC68 ultrafine grain tungsten carbide, Toughness and Hardness. The Coating :All end mill set with TiAlCN Coating, it is excellent resistance to high temperature and thermal impact. The Design: α≠β， A≠B, reduces operating vibration, improves cutting stability.The bigger core diameter make a High feed rating and greatly surface finishing. The Applicable : CNC milling cutter usually used for Steel Materials, Carbon steel/Alloy steel/Hardened steel/Stainlee Steel/Cast lron, etc. Wide Compatibility: WEXWE carbide end mill bits are compatible with most desktop CNC machines, as well as other industrial CNC machines. Wide Compatibility: WEXWE carbide end mill bits are compatible with most desktop CNC machines, as well as other industrial CNC machines. Quality Control: Each milling bit will be tested on the detecting instrument and laser a code Diameter tolerance -0.00～-0.02 The Material: HRC68 ultrafine grain tungsten carbide, Toughness and Hardness. The Coating :All end mill set with TiAlCN Coating, it is excellent resistance to high temperature and thermal impact. The Design: α≠β， A≠B, reduces operating vibration, improves cutting stability.The bigger core diameter make a High feed rating and greatly surface finishing. The Applicable : CNC milling cutter usually used for Steel Materials, Carbon steel/Alloy steel/Hardened steel/Stainlee Steel/Cast lron, etc. Wide Compatibility: WEXWE carbide end mill bits are compatible with most desktop CNC machines, as well as other industrial CNC machines. Quality Control: Each milling bit will be tested on the detecting instrument and laser a code Diameter tolerance -0.00～-0.02