... 100% compatible for Riso, Duplo, Ricoh, Gestetner series duplicator. Model: RZ/RV A3Feature:1. Stable quality with competitive price2. Good copy ... ,770,970, RV3650, 3660, 3690C/A, MV7690.2. Roll diameter: 38.5mm3. Length: 100m4. Inner packing: 2rolls/box; Box dimensions (l ...