This is a flat-type plaster formicarium specifically for ants. The plaster maintains the humidity crucial for ant keeping. How about this for your first ant keeping experience or for expansion? [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 nest (feeding area) dimensions External dimensions (Width W x Depth D x Height H) (mm): 90 x 70 x 23 Outer diameter of tube hole: 8mm Inner diameter of tube hole: 6mm Tube length: Approx. 5cm for connection Approx. 2cm for water supply hole (with stopper) Approx. 4cm for when feeding area is not in use (with stopper) If you do not need the water supply hole, please leave a comment. If you wish to purchase multiple cases, Plaster case (small) (75 x 50 x 20) One piece + 250 yen (feeding area without plaster + 160 yen) Plaster case (large) (90 x 70 x 23) One piece + 350 yen (feeding area without plaster + 250 yen) will be included. Tubes to be attached to additional items will be sold separately for 4cm (with stopper) + 20 yen. If you wish, please comment with the number of pieces you need. Each item is carefully made by hand, but as they are handmade, there may be scratches, dents, air bubbles, etc. Please refrain from purchasing if you are concerned. Due to material costs, shipping, etc., the price is at its lowest, so we kindly ask for your understanding that further price reductions are not possible.