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.
SmoothCut: Approx 62 teeth per 25mm (Fine).
SecondCut: Approx 36 teeth per 25mm (Medium).
BastardCut: Approx 26 teeth per 25mm (Coarse).
Size 100mm (4in)
Cut: square bastard.