Long Lasting: It delivers up to 350,000 characters Nylon Material: This ribbon is made of nylon material Twin Spool: This twin spool ribbon measures 1/2-inch by 8 1/2 yards Compatible: It fits Royal Epoch, Scrittore, and Scrittore II typewriters Bundle Includes: 3 x Olivetti Original Lettera Nylon Typewriter Ribbon (OEM, Black and Red)