1. Automatic take up system, Apply to any printer. 2. Removable main parts, suitable for paper core with different length. Motor equip with clockwise and anti-clockwise, Achieve the Internal model and External mode. 3. Both 2 inches (¦Õ48mm-¦Õ53mm) and 3 inches (¦Õ75mm-¦Õ80mm) are available for the paper core. 4. Adjustable torque. Diameter and weight of media are constantly changing in the process of rolling. Adjust the torque to control the rolling strength. 5. Design of through-hole can efficiently eliminate the size deviation brought by printer. Bearing ability is better. 6. Specially designed linking slab, fixed in the printers¡¯ feet without punching. 7. On the casing of main parts, Equip with fastening screw to fix the paper core firmly, ensure rolling more tidily.