I am no longer going to be breeding mice so I can let this go. It's a 6 tub mouse rack that can be added to later to make more levels if needed. It will come with the 6 tubs plus a few extra. Asking 150 shipped OBRO! For more info or to purchase please email me at blong7211@yahoo.com or shoot me a text at 717-383-7298. Thanks, Bryan