I friend of mine bought a standard 2 inch glided wand used. Wanted me to clean it up and use for a day to test it for him. Cleaned 12 areas of carpet with it. Wand did a great job, but it did a job on me. My shoulder felt like I went 12 rounds. I have the SS version of this wand. If you have any shoulder problems, demo one for the day. You will feel a big difference.