[Stang_Crazy]

The weight of the bar doesn't really matter because you apply light to moderate pressure while moving it across the surface. Also, the size/weight isn't a huge factor because when both sides get dirty, you stretch and fold the bar to expose a new side.....so as the surface gets dirty, you just fold it over to get a clean side.

One bar (of any size/weight) SHOULD clay AT LEAST one whole car. In the Zaino jar, you get two bars. That is more than a year's supply. Remember, you only need to clay twice a year.