Check the listing for details. Spiral Router Bit 1/4"x1/4"x1"x2-1/2" 2 Flutes 30 Degree Helix HRC49-51. Condition: New. Listed at 14.76 USD. Made of high-hardness tungsten steel, spiral cutter is wear-resistant, corrosion-resistant and has good cutting performance. The polished surface of milling cutter is flat and smooth, reducing material adhesion during cutting.2 flutes and spiral design of the end mill router bits facilitate the smooth discharge of chips and avoid blockage during cutting. Precision cutting edges ensure clean and accurate cutting.The up cut spiral router bit is suitable for side milling, finishing, grooving, stamping, engraving and other processing of cork, hardwood, plywood, laminate, oak, MDF, etc. Can be used with cnc routers and handheld routers, etc.Note: Be careful to avoid excessive and too fast feeding. It is recommended to use suitable coolant or lubricant during use to dissipate heat and extend tool life.