Ordering Description Product number Description: OK Weartrode 60 T 2.5x350mm Product number: 8478253030 Description: OK Weartrode 60 T 3.2x350mm Product number: 8478323030 Description: OK Weartrode 60 T 4.0x450mm Product number: 8478404020 Description: OK Weartrode 60 T 5.0x450mm Product number: 8478504020