Be very careful ordering this unit. Make sure the "adjustable I-beam flange width" capacity is big enough for your needs. In my case, my home-garage has a pretty standard-sized H beam, and this dolly didn't fit. I eventually replaced the central mounting pin with longer bar stock. Now it works fine.
I used this in my shop to move my entire dodge phoenix across and up a floor connected to the car with the Devore winch and worked smooth and faultlessly shifted the car .I will be using it another part of the shop and it is a great safe unit.
Its a great piece for an even greater price! I would highly recommend and I would buy one again for sure, more than capable of doing the job PLUS. Have lifted complete engines, lawn tractors and such already. Works perfectly.
Like any of these trolley systems, they are a challenge to install, particularly with one person. However, after installed they work just fine, and it does the job. Very simple device, seems well built, although I haven't had much time to use it.
We did not want to permanently mount our heavy hitting bag. Since I have a steel beam in our basement I purchased this to use. It works great and allows for the bag to be moved out of the way.