The marathon special tube / iron can be mounted with fixed cups, or with a Viking folding set.
The fixed cups are available in two heights, high and low, these two differ by thirteen mm. In height. Adjustable in width if properly mounted. The hard Viking Marathon special tubes have perfect sliding properties.
- Material of the tube: Steel
- Skating steel material: HSS bi-metal special steel
- Skating steel thickness: 1.1 mm.
- Hardness: 63 HRC
- Fixing skating steel: spot welding and soft soldering
- Color: Black
- Height: 35 mm.
- System: High or low cups