The pritt handy adhesive roller and permanent glue system is solvent-free, acid-free, non-toxic and child-friendly. The nib is colour coded red for permanent glue. It can be used to permanently glue paper, photos and cardboard, onto paper, cardboard, synthetic material and glass. The materials cannot be peeled off or re-positioned as the glue is permanent. Pritt's patented flexible nib technology ensures smooth application at all times.