Hello, This is a customer return product. The machine was originally mounted on an M1 stand. However, I had a spare cart from a faulty M3 unit, so I transferred it to that. Both machines are completely identical — the only differences are in the cart and accessories. As shown in the video, the product works flawlessly. If you look closely, you’ll notice that the machine itself has been used much less compared to the cart and suction hose. All accessories are complete. Please refer to the photos and video. Thank you