Yaks is a cheap chinese poor quality company.
That make all there money from little kids.
Blue yaks re the same as the red ones but;
1. Thinner spokes. but more spokes and in a patten thats like || || || || || 2 spokes, then space, one spoke, space, two spokes and repeat.
2. The Urethane is harder.
I dehubbed one on the front. Fucking shit wheel. But they look cool so you better get one.