Double cut teeth for filing slots, keyways, grooves, rectangular holes, internal corners and for fine-adjustment of cutting tools. Slightly tapered towards tip for surface filing. Smooth Cut approx. 62 teeth per 25mm (Fine). Second Cut approx. 36 teeth per 25mm (Medium). Bastard Cut approx. 26 teeth per 25mm (Coarse). Size 150mm (6in) Cut square bastard. Tanged.