Each Salt lamp comes with a UL certified cable. Each lamp has a high quality polished wooden or marble base with steel screws attached on the bottom of the lamp. Our easy to assemble plate is attached on the opening of the wooden base. This allows customers to change the bulb easily without opening the wooden base and this also prevents the bulb and cable from falling out of the lamp. Lamps do not come with the light bulbs. You can use 5-25 watts bulb which are available at any hardware or lighting stores like Home Depot, Lows and even dollar stores.