Crescent Nicholson Flat Bastard Cut File 150mm (6in) NICFB6
For general work on iron and steel. Slightly tapered in width and thickness. Double cut on both sides, and single cut on both edges. Smooth Cut: approx. 62 teeth per 25mm (Fine).Second Cut: approx. 36 teeth per 25mm (Medium).Bastard Cut: approx. 26 teeth per 25mm (Coarse).