The Grav Labs Mini Beaker is a smooth hitting 6″ glass waterpipe that is shaped like a miniature beaker. Features a fixed fission diffusing downstem with a 10mm cup style slide. Made from 25mm durable borosilicate tubing, the mini beaker is very durable. It’s also very stable due to its wide base. This pipe functions best with approximately 1 1/4 inches of water.