Crescent Nicholson 10" Round Single Cut Bastard File - CardedThe Crescent Nicholson American pattern, round single cut bastard files features a circular design with teeth all the way around. These files can be used to file circular openings or concave surfaces. The single cut construction provides light removal of material and slightly smoother edges. The slight taper in width towards the file's point creates ease of access in slots. Crafted from metal, the file's construction offers strength and durability.