Crossing files are half round on two sides with one side having a larger radius than the other. Tapered in width and thickness.
Cut and usable to the point. Used primarily for filing interior curved surfaces. The double radius makes possible the filing at the junction of two curved surfaces.
Swiss made Glardon Vallorbe® crossing needle files have round handles.
Needle file lengths are measured from tip to tip including the handles. Remember, the higher the number the finer the cut.
