Roor Narrowing Bowl - this is a screen less glass bowl from Roor. This bowl has had the neck of the bowl made tighter which means you don't have to use a glass screen. Rather than just pinch the glass in however which would leave that joint very vulnerable to knocks. The artists at Roor have increased the glass around this joint possibly making this one of the strongest glass bowls offered by Roor.
Roor bowls are the perfect addition to any roor bong. Using the same premium schott duran glass the artisans at roor deliver the perfect bowls for the perfect glass bongs. By choosing a roor bowl, you are ensuring that your smoking experience is exactly as the owner and chief designer Martin Birzle wanted you to have.