10pcs Carbide Spiral Router Bits 3.175/4/5/6/8/10mm Up & Down Cut Compression Bit End Mill 2 Flutes Woodworking Carbide Sprial Milling Cutter For Engraving Milling ( Size : 3.175x17x38L )

Shank Diameter ：3.175/4/5/6/6.35/8/10mm The design of up and down cutting spiral router bit effectively reduces cutting resistance, facilitates chip removal, makes the workpiece smoother and brighter, and further improves processing efficiency. The 2-flute carbide router bit is widely used for plastic boards, MDF, density boards, plywood, hardwoods, particle boards and so on. The compression cutter is designed with top and bottom grooves to prevent delamination of the top and bottom of the workpiece. The end mill cutting edge is hard and sharp, which can process heat-treated materials at high speed, reduce the number of tool changes and increase productivity.