This sleek hammer-style hand pipe from Grav Labs is a bubbler made from durable, 5mm thick, clear borosilicate glass. It’s equipped with a fixed diffuser downstem and a ladder percolator. These two will clean and filter your smoke with a great amount of diffusion. Grav’s Upline filter has three rings which make your hits super smooth. The carb hole is the icing on the cake. It allows you to create your very own smoking experience and milk this worked glass beast for all its worth. The piece is easy to hold and comfortable to use, thanks to its long straw mouthpiece. It measures 38mmx4mm, which makes it perfect for on the go. Use it with herbs, and it will bring out the best from your favorite strains.