The first frontier in percolation power! This diffused downstem exquisitely streams into water filtration through precisely sized slits. In order to maximize the diffusion in these hydrodynamics, opt for the downstem that suits your favorite bong or dab rig: from 3.5 inches to 8 inches in length. (Use a pencil to quickly find your perfect downstem measurement.) No matter the size, a 6-cut silhouette separates each inhale for a cleansing detox first. This clear glass piece connects a 14mm male slide into an 18mm stemless female water pipe. Keep it simple and straightforward with this 18mm to 14mm Diffused Downstem in a minimalist beaker base. Or percolation die hards can go hard with additional perc combos. A diffused downstem can instantly reinvigorate an old water pipe or be used to build your own custom creation. This essential accessory makes for an endless flow of smooth, easy draws from your favorite go to.