Solid Carbide spiral upcut router bits with 1/2inch shank and 1/2inch cutting diameter, 2 inch cutting length, 4 inch for total length The CNC Router Bits is suitable for Plywood, OAK, MDF, and any hardwood working and Long service life for sharp Spiral bits used for smoothly upcut groove and slots, Mortises, Cycles and dados with clean edge and bottom, better than straight bits The route bit suit for CNC router with 1/2” collet The New Design Coating provide heat resistance and wear resistance,enseure great performance and provide up to 2.5times tool lif