Percolator Bong Clear Beaker 6 Arm Tree PercolatorBlack Leaf Percolator Bong Clear Beaker 6 Arm Tree Percolator Using 5mm thick glass, this Black Leaf Glass beaker Bong features clear glass expanded sections and a clear glass 6 arm tree perc to guarantee a smooth experience each and every time. 6 Arm Tree Perc This piece features a six arm tree perc that helps break up and diffuse your hit. Doing this means that more of your smokes surface area is exposed to the cooling and filtering effect of the