Rw-300 Label Rewinder Back Specifications For use with the QL-300 label printerMaximum Rewind Diameter: 9.8″ (25 cm)Minimum Label Width: 1.0″ (25 mm)Maximum Label Width: 6.7” (170 mm)Core Size: 3″ ID (76 mm)Rewind Torque: Self-regulating for QL-300Power Requirements: 100-240VAC to 24V, 5A External Power AdapterDimensions: 18.4” (47 cm) x 17.6” (45 cm) x 15.7” (40 cm)Weight: 24.3 lbs. (11 Kg)