Solid Carbide Spiral Router Bit with 1/4 inch Shank and 1/4 inch Cutting Diameter, 3/4 inch Cutting Length, 2-1/2 inch for Total Length Flat Top with 2-Flute, Material: Solid Carbide with TiAlN Coated for HRC 55 For CNC Machine.Cutting Steel, Metal, Inconel, Stainless Steel, Titanium Alloy etc The Endmill Suit for CNC Router and Makita, Bosch, and Any Brand Plunge Router with 1/4" Collet End Mill Bits are Suitable for Side Milling, End Milling, Finish Machining, etc.