Ordering Description Product number Description: OK Weartrode 50 T 3.2x450mm Product number: 8016324030 Description: OK Weartrode 50 T 4.0x450mm Product number: 8016404020 Description: OK Weartrode 50 T 5.0x450mm Product number: 8016504020 Description: OK Weartrode 50 T 2.5x350mm Product number: 8016253030