The 13.5" Beaker Tube from LIT™ Silicone is made of BPA-free, food grade silicone and includes a glass pull-out and downstem made of 100% borosilicate glass. Looking for a durable, easy to use bong with glass parts and a vibrant design? Well you've come to the right place! The 13.5" Beaker Tube from LIT™ Silicone is made of BPA-free, food grade silicone and includes a glass pull-out and downstem made of 100% borosilicate glass. Pick out your favourite design today!