I used the blue corkscrew rollers a while ago. The result was okay, but I think they are a bit damaging to the hair. First, you have to hook them into your hair, and after you spiral your hair around the roller, you have to fasten your ends in with these blue spiral clips. They fasten to the shape of the roller. I think it would be more gentle and you would get the same result from small satin rollers. I hope this helps.
P.S. and the spiral rollers were soooo not fun to sleep in.