Cannabis dab rigs are specialized water pipes designed for vaporizing concentrated forms of cannabis, such as wax, shatter, or oil. They typically feature a heating element called a "nail" or "banger," which is heated to extremely high temperatures using a torch. The user then places the concentrate on the nail and inhales the resulting vapor through the mouthpiece of the rig. Dab rigs come in various sizes and styles, but they all share some common components: a chamber for holding water (usually glass), a downstem to direct smoke into the water, and an attachment point for attaching either a nail or banger. Some dab rigs also have additional features like percolators or ice catchers to cool down and filter the smoke before it reaches your lungs. Using a dab rig requires some knowledge about different types of concentrates and how they interact with heat sources like nails/bangers. It's important to start slow when experimenting with these devices since overheating can lead to harsh hits that may not be enjoyable for beginners. Additionally, always use caution when handling torches near flammable materials like glass pipes!