• Allows for expansion of Critter trail habitats
  • Includes fun-nel connector tubes, rings, and loop-d-loop
  • For hamsters, mice, gerbils or other small animals
  • 5-1/2-Inch long, 8-1/4-inch wide, 18-inch high
  • Each kit contains everything you need to expand your critter trail home

Awesome toy for the mice. It will connect to ovo pieces are well just a bit snugger than it should be if it where just ovo pieces. I love these tubes though i used them with my bin cage setup to connect separate cages and make fun tunnels for the mice.

This is our hamsters favorite sleeping area. and extra loop extensions included make it perfect price and size. Comes apart easy for cleaning. I recommend when putting together not aligning the holes on top of each other as they have in picture but offset a little for entrance. It makes it easier for them if you have tubes added to top and hamster not slipping down when entering from the top of large loop.

This was very easy to assemble, and my daughter's hamster was in it within a couple minutes of attaching it to the cage! It allows extra room for the hamster to roam, without having to put the hamster in the hamster ball.

Not at all hard to put together looks really fun and my hamster enjoys going through the tunnels, I did not set mine up like the picture I created my own loop to loop, I'll try to post pictures later and works with any critter trail habitat.

My mice love exploring these. I set them up in different configurations, which makes for new adventures every time I clean their habitat. I lay a bed of shredded paper and/or litter at the bottom to absorb their waste. Otherwise, it will drop through the ventilation holes and onto whatever is beneath.

Fun addition to the cage my daughter and tommy the hamster love it. Cute and easy to assemble.

My teddybear hamster fit through them. They are very nicely constructed and easy to assemble.

Field mouse gives these 2 tiny thumbs up. Didn't think he would use these because he was so small, but it takes him probably a 1/4 of a second to get from the far end of his cage to the top of these tubes. Damn things are fast. These tubes are a little flimsy and feel like they are going to break when taking them apart to clean. But apparently they are stronger than they seem. The seal for the hole in the cage works great. Keeps up the tube and closed up the hole. Would definitely get more.

I normally don't write reviews but I loved what I received so much I decided to offer my opinion. I have 3 hamsters, 2 short haired syrians and a robo. One of my syrians loved sleeping and hording inside of his tubes but he would be kind of squished in them. This loop was perfect and I knew it as soon as I opened the package. It's very spacious and a lot bigger than the tubes connecting to it. It has a top and bottom attachment for connection tubes as well which is nice. It attaches in 2 pieces and a plastic screw goes into the middle to secure it into place. It's very sturdy and I've only had it for a day now but my syrian has barely come out of it! A must buy for syrians who love to sleep, horde, and move bedding into their tubes. My other syrian however doesn't show the same interest in tubes so I didn't buy him one. Regardless it was an excellent purchase and my hamster is a lot happier.

we have 3 teddy bear hamsters that love their tubing. can be a little hard to pull the smaller pieces apart but is great overall. easy to clean; just soak in bleach/whatever cleaner you like to use and lay out to dry or just spray with water.