The nylon typewriter ribbon is coiled around two spools, ready to be fitted on your typewriter. Replacement for GR4 universal twin spool typewriter ribbon, designed with advanced printing and dyeing technology to deliver consistent, clear, and high-quality printing without fading. Premium features: compatible universal twin spool typewriter ribbon uses ultrasonic welding technology to splice the ribbon, ensuring a smooth and seamless connection, preventing damage to the typewriter caused by rough joints. Versatile use: suitable for office, home, or business environments. Ideal for accurate and reliable printing for daily tasks and projects. Model compatibility: designed to fit most typewriters with twin spool systems. Please confirm your typewriter model before purchase. Ribbon ink color: Black & Red / Black Easy to install, remove, and replace Compatible with Olivetti GR4 typewriter Material: ABS + nylon Package contents: 4 x Typewriter Ribbon or 1 x Typewriter Ribbon Package includes only the items listed above; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.