dry guide coat. 3M sells it by the tub. a tub will dust a few cars so it lasts a while doing parts like you will use it for. $30-40 a tub though. its 3M what do you expect. 
dry guide coat. 3M sells it by the tub. a tub will dust a few cars so it lasts a while doing parts like you will use it for. $30-40 a tub though. its 3M what do you expect.