Electronic Rigs, or E-rigs are an all-in-one solution. You don't need anything else other than some wax to smoke. Electronic rigs usually have a water chamber that attaches to the battery. Inside said water chamber are two holes to create bubbles and percolation. E-nails fit onto your existing dab rig, but other than the rig nothing else is required to use an E-nail. E-nails are cheaper than E-rigs and let you choose a precise temperature as opposed to pre-determined settings. For a detailed breakdown check out our E-Rig Buyers Guide that will help you decide what's the best device to buy based off your needs.