Grobet Precision files. The standard for quality and performance! Half-round on two sides, with one side having a larger radius than the other. Tapered in width and thickness. Cut and usable to the point. Used primarily for filing interior curved surfaces. The double radius makes possible the filing at the junction of two curved surfaces or a straight and a curved surface. Double cut on both sides. Total length is 6". The higher the cut, the finer the grit. Sold individually.