Dahon Kinetix Pro Aluminium Rim RED paired Spoke Pattern Made from a niobium alloy (Nb-Al T10) that is almost twice as strong as 6061-T6 aluminum, our Kinetix ProLite rims are among the lightest and strongest rims in the world. Double walls and a CNC machined braking surface are of course standard. An added bonus is that niobium alloy is substantially more corrosion resistant than standard aluminum. Paired Spoke Pattern on 14H standard spoke pattern on 32H RED SUPPLIED ERTO 20" 406 X 14