ExtremeCarving FORUM

this sounds suspiciously like someone putting a rock in your back pack as a joke. Isn't granite a very brittle, heavy, nonflexible material? so far putting a rock in my skiis or board doesn't sound like a benefit. I think that I will take my chance with light sensitve material that is very unlikely ...

I have used the Wisdoms with motocross helmets. one helmet (HJC ACX 1) they worked great the other (HJC CLX-4) did not. all depends on the design