[Material]: T800 high-strength carbon fiber + aluminum alloy double nail chuck

[Specifications]: 27.2/30.8/31.6*350 (or 400) MM

[Scope of application]: road bikes; mountain bikes; folding bikes...

[Weight]: 27.2*350MM weighs about 210-230 grams

Tips: There are three specifications of seat tube outer diameter 27.2/30.8/31.6mm,

The default length is 400 MM

If you need 350 MM please leave a message to tell us

please make sure to figure out which type of seat tube your frame uses before buying, so as not to use it after buying.