Black Leaf Hempmaster Beaker Bong IceThe 'Hempmaster' presents: robust, blown from 5mm glass tube, beaker bong by Black Leaf in a handy size, and with sufficient smoke volume. Made of the best, partly green borosilicate glass with a stable 5mm wall thickness. Slit diffuser chillum for smoke cooling and filtering Cool 'Hempmaster' motif print Robust, stable quality Thanks to the narrowed pipe tube, ice cubes can also be filled in for additional cooling. The glass bong is completed by the