i put in some cold kutter ice racing studs for this years ice race and i have to say that in this type of enviroment they are worthless, we race on the same track as the snowmobiles and after the sleds race than us the quad guys go out, thier is so much snow build up on the track that the little tiny cold kutters just slip around like you arent even using studs, the way to go for us is the deeper the stud and the deeper the clean out area the better, i will get some pics up soon of the studs that we run vs. the cold kutters.