CNC End Milling Bit, EnPoint High Precision Carbide End Mill with Single Flute, 5/32" 4mm Shank 4mm Cutter Dia 22mm Flute Length Aluminum Router Bit for Metalworking Woodworking Acrylic PVC MDF Plate Produced from a premium ultra fine submicron grade solid carbide for great tool strength, durability Large single flute for maximum chip clearance space for chip evacuation; center cutting for straight plunging or ramping down into the workpiece With a unique mirror grinding processing for cutting edge produces an excellent surface finish 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.