Bong 7.0 3 PieceRoor UK 7. 0 3 Piece Bong Roor is the German brand that is a landmark presence in the UK bong scene. All across the UK Roor is a respected name, and with good reason. Roor Bongs are the ultimate fusion of form and function Roor UK Features Introducing the Roor UK 7. 0 Green heavy duty Bong! The Roor UK bong with the thickest wall diameter of all the pieces in our collection. 7mm wall thickness means 40% more glass volume compared to the models with