The lampshade bases we manufacture in our own workshop are suitable for all handmade lamps, especially gourd lamps. -The bottom side of the coasters shown in my picture is 15 cm in diameter and the upper part is 13 cm in diameter. You can contact us via message for your needs in different sizes. It is made of raw wood. It can be easily painted in any color you want. For models with varnished or painted surfaces, you can check out the other products in our store. The product will be sent assembled. The contents of the box are -1 wooden base-1 nipple-1 nut-1 spring -1 e14 socket and 1 cable with connector (button). NOTE: We sell bulk products for public education and course centers. You can contact us for details.