Large rewinding capacity and flexible core compatibility: rewinding diameter 7 inches, width 4 inches, with 10 level speed adjustment. It accommodates core sizes of 1.49, 1.57, and 3 inches, and supports twoway rewinding for efficient automatic operation. Benefit: handles a range of spool sizes and speeds with minimal setup, reducing manual adjustments. Reliable alignment and printer compatibility: advanced speed sensing technology with a gravity selfsensing adjustment rod to prevent misalignment. Compatible with most printers and automatically pauses when the printer stops for seamless operation. Benefit: lowers misfeeds and downtime, ensuring smooth integration with existing workflows. Easy control and realtime monitoring: ergonomic knob on the side for 110 gear speed adjustments and a rewinding speed of up to 100 rpm, enabling easy monitoring and adjustments during use for user convenience. Benefit: precise, intuitive control and quick readiness during operation. Protective performance to safeguard print heads: selfadjusting pressure bar automatically rises if printer speed exceeds limits, halting the paper to protect the print head from damage. Benefit: automatic safety mechanism that reduces the risk of head damage and costly prints. Use scenarios Office or production printing with mixed spool sizes: quickly adapt to 1.49, 1.57, and 3 inch cores, maintain consistent rewind with twoway operation, and adjust speed to match print output without frequent manual intervention. speed label or continuous media printing: rely on gravity selfsensing control to maintain alignment and automatic pauses when the printer stops, preventing jams and wasted media. Automated printing workflows or batch jobs: the 100 rpm rewind speed and side knob allow onthefly adjustments while ensuring the printer operates within safe speed limits, reducing supervision and improving throughput.