- Casing: pressed steel, with stable central bolt, bolted wheel axle, zinc plated and chromated.
- Wheels: POEV tyre: elastic solid rubber, smooth running qualities, colour black, 65° Shore A, vulcanised, unbreakable joint, minimal rolling resistance.
- Rims: high quality nylon, colour black, shock and impact resistant, corrosion-resistant, with ball bearing.
- Additional remark for size description:
- K = ball bearing.