Flexible Installation: Save time and effort with no installation needed. Simply insert the shaft, pull the chuck, and the paper tube is securely fixed in just one second. It accommodates any paper tube size ranging from 1 to 1.5 inches and can operate with or without a tube. Speed Adjustment Feature: Effortlessly adjust the speed using the convenient knob to match the printer's speed. Once adjusted, the label rewinder automatically synchronizes its speed with the printer. Specifications: Rewinding width is 120mm with a rewinding diameter of 220mm. The rewinding speed ranges from 1 to 10 inches per second, featuring automatic synchronous rewinding and bi-directional capabilities. Printer Synchronization: This label rewinder is designed to synchronize with the printer, ensuring the rewinding speed matches the output speed of the printer. It will also pause when the printer stops. Service: We place great emphasis on our customers' shopping experience! If you have any questions, please feel free to contact us, and we will respond to you within 24 hours.