we can supply tires retreading lines by buyer's requirment. Buffing machineProduct data:Description: 15″~16″,20″~22.5″Automatic Buffing MachineOverall size(LWH): 2500X2000X2200mmFunction: Top of the child will be old tires, polished by the provisions of the renovation process of the tread arc curvature of the scope of polished 400 ~ 750mm, can be polished to a specific curvature, configuration, ...