Pack of 10 pieces of solid tungsten carbide reversible turn blades. Size - 13.8mm x 13.8mm x 2.5mm with 4 cutting edges to fit the Felder Hammer cutter head. These blades are manufactured in a specially selected grade of tungsten carbide, and are ground to a MIRROR QUALITY FINISH to produce the sharpest, keenest edges possible. We stock all other popular sizes of tungsten carbide reversible turn blades.