As a maintenance technician I chose this unit because none of the others had really good reviews. Very disappointed with the package. It had holes and was beaten. Because of this, the tank lacks color. Parts for mounting the wheels were also missing. I've only used it to get frustrated that the Dead Man's handle has worn down and is almost bending flat. The tip no longer seals, causing the dead man's pen to rise to the top. When setting up the wheels I was forced to make it impenetrable, it rolls poorly under load. I'm not sure if the stock parts are any better. You need a good compressor and dry abrasive. When he works, he does a good job. But in general very clumsy. Very disappointed.