This is a Feiyutech AK2000 camera stabilizer. I purchased it used and used it a few times, but haven't used it for about two years, so I'm selling it. I was able to use it without any problems with a a7sii + 16-35mm f4 combination. There are scratches on the gimbal arm and base due to rubbing. (See photos 3 and 4). Please be aware of this.