Features: Replace your old, damage tape recorders part with this set movement cartridge radio rollers. Ensure stable and recording quality with its quality design. Suitable for various tape recorders. Easy installation and maintain, making them perfect for anyone in need of replacement part. For individuals who require recordings, such as recording engineers, music producer, and enthusiasts. Upgrades your equipment and enjoy exceptional sound reproduction. Perfect for recording studio, broadcasting room, and live performances where recording is essential. These rollers provide the necessary resistance for tape to head performances. Share the convenience and reliability of these rollers with others. Improve your recording experience and achieve sound quality. Specifications: Component: Plastic Diameter: About. 10mm/0.39in Color: Black Package Includes: 5pcs Pulley Wheel note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.