6mm glass marble ball for wide bong stems and beaker bongs. Maximum diffusion in large rigs.
Marble Ball 6mm
6mm glass marble ball for wide bong downstems and large dab rigs. The biggest size in our range, designed for beaker bongs and wide-bore stems where smaller balls would fall through. Borosilicate glass, heat-resistant and easy to clean.
Sizing Guide
6mm is the largest option, best for wide stems and beaker bases. For standard stems, 3mm or 4mm will fit better. Stack multiple balls for layered diffusion.