27.5er Carbon mtb wheels are suitable for 27.5er (650B) mountain bicycles, which are specially designed for cross-country (hills, trails, wilderness and gravel roads, etc), and can be used in mountain bike race. According to the different place used, there are XC/AM/DH… mountain bicycles wheels. “GO-ZONE” focus on the stiffness of the carbon MTB wheels.  For the surface, there are 3k/UD/12K/3K twill/12k twill… matte or glossy. And there are novatec/DT Swiss/koozer/fastace/powerway...Carbon MTB Wheelset 27.5 for reference