The Polini Hi-Speed is one of the strongest for drive in a maxi scooter. Larger surface area means optimal performance and better acceleration and top speed. Great quality, low-friction, and great power transger with reduced slipping. Delivery contains: complete variator with 2x sets of rollers 20x17 at 13.2g and 9g, vario sleeve, sliders and 1x tube of grease for the rollers. Instructions included.