【Professional Configuration】: Comes with the label rewinder, 25mm/40mm dual-size core accessories and a 12V/1A dedicated power supply, equipped with a 130 rpm high-speed motor for plug-and-play use to boost productivity instantly 【Infinite Speed Adjustment】: Equipped with a precision stepless speed control knob, the rewinding speed can be adjusted in real time according to the printer's paper output speed to keep labels flat and tight, avoiding jams, slack or overstretching 【Dual Paper Core Compatibility】: Fully compatible with 25 mm and 40 mm inner diameter paper cores, supporting a maximum core length of 12 cm and a roll width of 15 cm, providing stable clamping for both standard 【Automatic Start/Stop】: Built-in intelligent sensors automatically adjust the rewinding force based on printing speed to prevent printer stalling, and the speed control lifter monitors label status in real time to effectively avoid paper accumulation and waste 【Wide Applications】: Realizes automatic label rewinding, suitable for multiple industries with high requirements for label rewinding, including logistics labels, electronic labels and clothing labels