Ordering ( Item availability may vary by region. ) Description Product number ( Item availability may vary by region. ) Description: OK Weartrode 30 2.5x350mm Product number: 8328253030 Description: OK Weartrode 30 3.2x450mm Product number: 8328324030 Description: OK Weartrode 30 4.0x450mm Product number: 8328404020 Description: OK Weartrode 30 5.0x450mm Product number: 8328504020 Description: OK Weartrode 30 3.2x450 1/2 VP Product number: 83283240G0 Description: OK Weartrode 30 4.0x450 1/2 VP Product number: 83284040G0 Description: OK Weartrode 30 5.0x450 3/4 VP Product number: 83285040V0