Home / Promotional Merchandise / Folders / A4 Polypropylene Ring Binder A4 Polypropylene Ring Binder A4 Polypropylene Ring Binder with 25mm 2 D or 2 O ring mechanism. Add to Quote Categories: Folders, Promotional Merchandise Related products Hepburn full-colour ballpen Astaire full colour ballpen Senator Point Polished plastic ballpen BIC Grip roller