EnPoint High Precision Aluminum Cutting Carbide Single Flute Router End Mills 15/64" 6mm Shank 6mm Cutter Dia 22mm Flute Length CNC Spiral Milling Cutter for Acrylic PVC MDF Color Plates Produced from a premium ultra fine submicron grade solid carbide for great tool strength, durability With a unique mirror grinding processing for cutting edge produces an excellent surface finish Large single flute for maximum chip clearance space for chip evacuation; center cutting for straight plunging or ramping down into the workpiece The spiral cutting egde provides sharp cutting and improves work efficiency It is mainly used for the engraving and cutting of Aluminum, Acrylic, Medium Density Fiberboard, Corlor Plates and PVC etc.