I saw a video of this on youtube once, because I have a lot of crap to clean off this wall. I think he called it an "alligator" (which doesn't help cuz it's also the brand name of a dewalt saw). Anyways, I've got the DIY cabled version of the GOP with rigid blade which will do the job but this thing was far superior and cheaper it would rip all the old tiling glue/loose bonding to shreds. If you know what this tool is, please let bodge know!