Solid Carbide End Mill Aluminum Titanium Nitride Coated (AlTiN) CNC Router Bit Collection These router bits are manufactured from our exclusive ultra-fine micrograin carbide and feature a 30 degree Center Cutting Mill End a corner chamfer (for extra strength) up cut design and very importantly Aluminum Titanium Nitride (AlTiN) coating for superior cut quality. Excellent for cutting: Stainless Steel Steel Cast Iron Composites Low Carbon Steel Magnesium Plastics Super Alloys Titanium (up to 40HRc Hardness) These bits are perfect for the signmaking industry. Our special carbide grade combined with the AlTiN coating gives amazing performance. The unique corner chamfer gives the bits great strength. AlTiN coating has many benefits: Extra wear resistance Allows for faster feed and speed rates Cutting edge protected from wear Better chip evacuation Less heat build up Superior cutting quality and extended tool life Note: For optimal results and to extend tool life use mist lubricant system or air cooling. Please inspect cut and adjust accordingly. Care should be taken to observe proper feeds and speeds according to the workpiece material to avoid damage.