To compare with STD Edition rims, the improvements of Premium Edition rims are as below.
1. The premium rims are manufactured by T700 + T800 carbon fibers materials with better resin composite between carbon fibers;
2. 20% T800 + 80% T700 carbon fibers. T800 performs better rigidity and T700 performs better tenacity;
3. We made a single mold to layer up the spoke bed wall. The flatness of rim channel surface significantly improved, which makes the thickness at each spoke hole completely consistent. Also, it effectively prevents the carbon loop of spoke hole wall from shifting;
4. Each of rim would be attached with a card showing the flatness and roundness. The flatness is controlled within (+/-0.15mm), better than STD edition (+/-0.25mm). roundness is controlled within +/-0.2mm, better than STD edition 0.3mm. It's quite easy to build wheels than STD editions;
5. Three years warranty;