This stand is the original one offered only to designer's of rda/tanks and now offered to you ! The D15 holds 15 toppers upto 25mm and has a riser made for logo's or custom names. the D18 is the same with the exception that it holds 18 rda's or tanks...(warning not all logos will work but will try my best to make any logo work ) (((((Attention))))) due to the nature of 3D printing there may be artifacts or blemishes on the surface of items and these items can be sanded down very easily if you choose to do so.
These stands are top notch made by a great business. Great customer service and fast shipping.