Anelli di arresto

FRM90/1,5, FRM72/7,5, FRM62/7,5, FRM72/3,5, FRM62/3,5, FRM72/8,5, FRM52/3,5, FRM80/5,5, FRM215/8,5, FRM230/7,5, FRM85/5,5, FRM150/8,5, FRM100/6,5, FRM120/6,5