Wire comb binding is offered in two pitches: 3:1 and 2:1.
3:1 pitch is usually used for book thicknesses from 3 - 13 mm. RENZ® offers 3:1 elements and spools in diameters 3/16" (5,5 mm) up to 5/8" (16,0 mm).
Below are the cut wire comb element colours offered by RENZ®.