I have one that I bought when Lowes was clearing them out. It's quite powerful, but the table is too small, and I don't like the table grooves, but have lived with them. Before using it much remove the power switch and seal up the holes in the back side of it. I wrapped electrical tape around mine. If you don't do this, the switch will quickly fill up with fine sawdust and will quit working. It can be cleaned out, but it isn't easy to do, so keep it clean and sealed from the beginning.
I cut a hole in a piece of plywood the size of the metal table and mounted the unit in the middle, so as to add about 6" of table space to all four sides of it to have a larger work surface. I had also made a cabinet to use as a stand, but found it too awkward to move easily when mounted to this cabinet. I since just had a piece of plywood bolted to the bottom with a strip of wood attached so I can clamp it into one of my workmates and use the workmate as a stand for it.
You can quite likely buy new wrenches for it from any one of the online replacement parts sources like www.ereplacementparts
I've used my router-shaper for quite a bit of work and it has performed very well for me. I've even done raised panels with it. It has a thermal cut-out built in, so it will shut off if you over heat it. If you do overheat it, just turn the power switch off and wait for it to cool down. It will run again after it cools. DAMHIKT
It's been my portable router table for about 15 years now. A 1/2" shaper spindle was available for it that fits into the 1/2" router collet and this may still be available, if you should want to use it with 1/2" shaper cutters, but I've always just stuck with router bits. The fence that came with it works, but it is far from fancy and I hate the slots and hold down design. I've been considering making a better and longer fence, but never have. A piece of stock and clamps is usually put to use when the provided fence isn't adequate enough. I did discover that a Porter Cable 1/4" collet and collet nut fit it exactly, so I now have both 1/4 and 1/2" size collets for mine.
Use it as you would a router table, taking all of the appropriate safety precautions that you would for a router table. I use a Grripper with the narrow side removed to ride against the fence as a pusher. I also have a small parts holding jig that I use with it frequently. The one that I have is the yellow one. Lee Valley Tools - Small Parts Miter Jig
Another similar jig is Rockler Small Piece Holder | Rockler Woodworking and Hardware
Add pieces of 80 grit peel and stick sand paper to the holding surfaces of whichever jig you buy so the jig holds onto your work better.