PROXXON 28710 Set of Tungsten Vanadium Precision Cutters with 1/8" and 3/32" Diameter, Silver, 5 Piece Selected Tungsten and vanadium steel Tungsten vanadium milling cutters are purposely made from one-piece blanks in Tungsten vanadium steel for highest concentricity and to allow for vibration free milling and high accuracy Ideal for milling, routing, shaping, profiling, and slotting