SWIX TBS Carbon Rollerski Poles Ferrule. Rollerski ferrule in the TBS System with a special lightweight and durable spike in hardmetal. The TBS system enables you to change ferrules within seconds, no glue or tools are required. The ferrule has been moulded around the spike for the best possible strength. The spike could be sharpened by file/stone when needed. Diameter: 10 mm
