Upcut Spiral Router Bits 1/4 Inch Shank, 1/4 Inch Cutting, Edge Trimming Upcut spiral router bit with 1/4 inch shank and 1/4 inch cutting diameter, 1 inch cutting length, 2-1/2 inch for total length SOLID CARBIDE AND NANO BLUE COATED: The up-cut spiral router bit is made of solid carbide. And Nano Blue Coating with high hardness and heat resistance enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality. Clean surface, neat, no glitches. Up to 2.5X longer life compared to uncoated bits. CNC Spiral bits used for side milling, end milling, finish machining, etc. End Mill Bits can smoothly downcut groove and slots, mortises, cycles and dados with clean edge and bottom, better than straight bits. The CNC End Mill Router Bits apply to various wood: such as Plywood, OAK, MDF, and any hardwood working and Long service life for sharp. And also for carbon steel, soft alloy steel, tool steel, cast iron, aluminum alloy. The router bit suit for CNC router and any plunge routers with 1/4" collet.