This fret crown file has three different radiuses in one file:
Small Standard Radius - 1mm
Medium Standard Radius - 2mm
Jumbo Radius - 3mm
Cutting edges are concave - Files in both directions and avoids leaving chatter marks.
Coated with a very fine 600 grit diamond surface. (Less sanding and polishing required).
Suitable for standard fret wire materials, and also Stainless Steel.
File is 230mm in overall length (Sshaft is 130mm, Handle is 100mm).
Quality Made in Japan Diamond File - Steel.