DT Swiss TK540 622 X 19 36 Hole Trekking Bike Rim - SilverDT Swiss TK540 622 X 19 36 Hole Trekking Bike Rim Silver The DT Swiss TK 540 is a light and high quality 28 inch touring rim for rim brakes featuring double eyelets. The TK 540 is ideal for those looking for the ultimate welded aluminum rim. With double eyelets, it is plenty strong for touring the country side or commuting use. Integrated wear control indicators allow for easy inspection of the braking surfaces. The welding process creates the most