The R 120 Media Rewinder External Rewinder (Patent Pending) is the perfect compliment to the exceptional performance of Postek Thermal Bar code Label Printers. The R 120 Media Rewinder features auto adaptive torque technology. It will work with any label whose core size is 1 to 3 inches. With the R 120 Media Rewinder working in tandem with Postek printers, productivity will be optimized resulting in cost savings efficiencies.