Bowls and domes are a necessity to make your water pipe or dab rig function properly. Bowls, coming in either 10mm, 14mm, or 19mm sizing. Connecting your herb to your downstem and thusly your water pipe, bowls are essential for your smoking experience. They can be made in a variety of colors, depths, and designs. Domes, on the other hand, are important to capturing concentrate vapor on your nail. For those who prefer nail dabbing as opposed to domeless nails, a dome is necessary to funnel vapor. Once you have heated up your nail and applied your wax concentrate, simply slide your dome over top and inhale. Its that easy!