The Rossignol OneWay Carbide Roller Ski Ferrules are constructed of the toughest high impact resistant plastic and durable carbide tip. Extended construction protects lower part of the shaft. There are two different sizes 9mm(Most One Ways and Madhus) and 10mm(Most Swix).
Note:
We advise you take a couple of strokes with a V2 diamond stone every time you go out to ski to keep the carbide tips sharp. Don’t wait until the tips are dull as it will cause your pole to slip.