The concept was great but the execution is very poor. The first item I ordered came with one of the essential pieces broken. I tried to make do but in the end, it was a waste. I ordered again (and the darn thing is not cheap!) because conceptually it is great. Again, the thing came with the same kind of thing broken. AND missing all the hardware - nuts, bolts, screws, etc. This time I got through to customer service and am waiting for them to send me replacement parts. A total disappointment. And a waste of time. The idea is so good but the manufacturing and the product is really poor.Mantis Back Porch ComposTumbler CT08002 - Engineered to Make Compost Fast - Holds 37 Gallons - Low Cost Per Gallon - Mobile Rolls Direct to the Garden

Just the right size

Great tumbler! I love that it's on wheels so you can bring it right to the garden for transfer. Nice size and well made.

We ordered this through amazon due to free shipping. The manufacturer had it for the same price but added around $40 shipping. That decision cost us about a weeks time. We met the UPS delivery vehicle and upon seeing the box we knew it had been opened. The staples that close the top were missing and it had been taped closed with clear tape. The wheels were missing and parts of the frame were missing. As those would have been difficult to fall out on their own, it was obvious to us that someone had taken them out. Not pleased. We called the manufacturer and they were very responsive, sending us the missing parts for free.
As to the unit itself; this one replaces one we purchased back in 1998. The old one was finally falling apart. We liked the old one and that's why we went with this one. It is very close to the old one with a few slight changes. The new door latch is an improvement (we hope). The old door could (and sometimes did) open when being turned when there was a lot of compost in it. One change I'm concerned about is the door hinge is now plastic where the old one was steel. I have a feeling it's not going to last as long.
Mantis recently bought the company that made the old version we had. I don't know if some of the changes are theirs or if the original company had made the changes over the years.
Bottom line, we loved the old one and are looking forward to years of compost from this one. One of the complaints others have made is that the pre-drilled holes for the screws are too small and need to be drilled out more. That is a valid complaint. I didn't have much trouble putting it together but I did have to drill out the holes some.
Overall, a good product and if this one lasts as long as the other one, we'll be getting another one in 15-20 years.
P.S. I frequently get a review request from amazon about shipping. I was looking forward to getting one this time and it didn't come. I think I know why.

Thank goodness for YouTube to help assemble this!! Like the composted though