Master rolls for use with risograph cz180. This is a OEM DRUM/MASTER/COPY CTG/OPC RISOGRAPH brand Drum Supply (MASTER ROLLS) that works with the following printers / machines (CZ180). Product Details: Unit : CN/2 Yield: 408 Weight: 2.307 lb Special Order Item: N Machines/Models: RISOGRAPH - CZ180 RSGS4877, S4876, S-4876 . MASTER ROLLS. CZ180. OEM RISOGRAPH Brand.