This fret crown file has three different radiuses in one file.
It can be used according to type of fret crown.
Small standard (R=1mm)
Medium standard (R=2mm)
Difference in Electroplating process
Evenly grained diamond makes the cutting edge contact more to fret, contributing to high durability with no clogging.
Before and after
High Grade sharpness, Hard to Clog and High durability.