500 - 21
- Offset inner tube for 525 - 21: Michelin 19/20H Offset Valve tube
- Offset inner tube for sizes: 440/450 - 21, 450/475 - 21 and 450 - 21: Michelin 20/21CD Offset Valve tube
- Central inner tube for 500 - 21: Long Central Valve Tube 450x20/21
- Rim tape (for Wire Wheel) for 500 - 21: Rim Tape for Wire Wheel 18" - 21"
- 500 - 21 can also be described as: 500 x 21
