Product characteristics: 1. Mainframe: Four head steel wire wheel sanding device, use tightener device before and after polishing 2. Purpose: Polish the back of the pre-vulcanizing tyre tread 3. PLC adopt Mitsubishi series which can control the electrical machine and pneumatic drive automatically 4. Apply to the tyre tread width between 130mm-350mm; 5. Apply to the tyre tread depth between 10-50mm.