The design and the production materials of the sprockets ensure their longer life duration.

They are produced with 8 teeth (Ζ8, Φ112mm),

                           with 10 teeth (Ζ10, Φ146 mm),

                           with 12 teeth (Ζ12, Φ170 mm) and

                           with 16 teeth (Z16, Φ240mm).