The new BANDO rollers are made from a high-quality hard material so that no premature wear builds up on the rollers or on the variator. They replace the scooter's existing rollers They fit with no difficulty and no modification. A choice of weight to suit what we ask of it. If we choose lighter grams we get better acceleration. If we choose heavier grams we get a better top speed. The set contains 6 pieces Height (mm) 18 mm Pieces 6 Outside Diameter (mm) 23 mm