Great low profile looks and slightly wider than the Olympic rim. The ZTR 355 can be used with tubes and tubeless. Stans feature a reduced height sidewall and a patented 'no bead hook'. The rims need to be sealed with tape such as the Yellow spoke (either width) sealing or Nylon tape tape to protect the rimstrip.You also need a rimstrip or valve.Tech notes:parts included: rim only26''width: 24.4mmweight 26'': 365gholes: 32