2-chamber precooler from 'Black Leaf' with an eye-catching colourful design - a masterpiece of glass art! The pre-cooler, which filters out excellently ash and other soil particles out of the smoke, has a blue ‘17-slit diffuser’ with 29er touches. The cut for the head is 18.8mm. The pre-cooler fits with the supplied adapter to any bong with 14 or 19mm cut. The 'Black Leaf' logo is placed on top of the second chamber. This pre-cooler combines a pleasant smoking experience with art design.