This is a flat, plaster-based formicarium designed for ants. The plaster helps maintain the humidity crucial for ant keeping. How about this for your first ant keeping experience or for expansion? The sample in the 4th photo is a large plaster case. [Features] The thin, highly transparent case makes observation easy. It is particularly comfortable for keeping a single queen ant or when you have few worker ants. Furthermore, by connecting nests, you can keep colonies from small to large scale. [Size] Plaster box (feeding area) dimensions External dimensions (Width W x Depth D x Height H) (mm): 75 x 50 x 20 Outer diameter of tube hole: 8mm Inner diameter of tube hole: 6mm Tube length: Approx. 5cm for connection Approx. 4cm for when feeding area is not in use (with stopper) Please comment if you need a hole for water supply. If you wish to purchase multiple cases, Small plaster case (75 x 50 x 20) One unit + 250 yen (feeding area without plaster + 160 yen) Large plaster case (90 x 70 x 23) One unit + 350 yen (feeding area without plaster + 250 yen) will be included. Tubes for additional units will be sold separately for 4cm (with stopper) + 20 yen. Please comment with the number you need if you wish to purchase them. You can also change the combination, such as a large plaster case and a small feeding area. Please comment. Each item is carefully made by hand, so there may be scratches, dents, air bubbles, etc. The small case may have some minor scratches from the time of purchase compared to the large case. Please refrain from purchasing if you are concerned. Due to material costs, shipping, etc., the price is at its lowest, so we cannot offer further discounts. We appreciate your understanding.