https://www.amazon.com/Lixit-Critter-Hollow-Assorted-Colors/dp/B00OHU8TW0/ref=sr_1_39?crid=19RK531NAR1VZ&keywords=rat+tube&qid=1667375754&qu=eyJxc2MiOiI0LjkyIiwicXNhIjoiNC41NyIsInFzcCI6IjQuMDQifQ%3D%3D&sprefix=rat+tube%2Caps%2C98&sr=8-39
https://www.amazon.com/Ferplast-Ferret-Rat-Tube-Transparent/dp/B001MZYD6E/ref=sr_1_11?crid=19RK531NAR1VZ&keywords=rat+tube&qid=1667375754&qu=eyJxc2MiOiI0LjkyIiwicXNhIjoiNC41NyIsInFzcCI6IjQuMDQifQ%3D%3D&sprefix=rat+tube%2Caps%2C98&sr=8-11