1/8" 3/16" 1/4" 5/16" 3/8" 1/2” 2 Flute Carbide End Mill Bits Set - 6pcs Carbide Upcut CNC Spiral Router Milling Bits for Steel - Square Nose, TISIN Coated,Center Cutting$$Tools

sisona Carbide End Mill Sets -- Cutting Diameter: 1/8 - 1/2 inch（1/8" 3/16" 1/4" 5/16" 3/8" 1/2”）,Shank Diameter:1/8 - 1/2 inch（1/8" 3/16" 1/4" 5/16" 3/8" 1/2”）,Cutting Length:3/8 - 1 inch（3/8" 5/8" 3/4" 13/16" 1" 1”）,Overall Length:1-1/2 inch - 3 inch（1-1/2" 2" 2-1/2" 2-1/2" 2-1/2" 3”） High Quality:made from solid tungsten carbide (TC),have a Titanium Nitride (TiN) surface to improve heat resistance and reduce wear. Used it strictly for steel, it worked great for that, eats metal fast, beautiful surface finish!Watch your stick out and travel speeds. Applicable Materials: cnc bits usually used for steel（Carbon steel/Alloy steel/Hardened steel/Cast lron, etc.） Wide Compatibility: sisona end mill bits are compatible with most desktop CNC machines, as well as other industrial CNC machines. Just make sure you select the correct-sized collet for your device.