Vevor products in general have been hit or miss for me. Some have been very low quality, others acceptable. This is by far the best product with the Vevor name on it that I have seen. These stairs completely surpassed my expectations. Build quality is very good. All the welds are clean and strong. At this price I was expecting bare aluminum or maybe a clear coat, but this has what appears to be a very high quality powder coat and a clear coat. The edges are all smooth, the aluminum is thick and super sturdy. This is the quality I would expect for 2x or 3x more money. There are a few issues to be aware of, but overall these stairs are well worth the money and a great value. There are only enough washers included to use them on the nut side of each bolted connection. I wanted to use washers on both the nut and bolt sides, especially in the stair treads, so I had to supply extra stainless steel M8 washers. Not a big deal to me, I had them on hand. The other issue is that the stair treads are a little difficult to assemble. They edges are bent around the both the front and the back where the bolts need to be secured, making it impossible to get a socket on these. Using a 13mm wrench on that side and a 13mm socket on the other side works. Height is set using a bolted connection. It's not difficult to do when setting these up, but if you need to adjust the height it will require taking 4 sets of nuts and bolts out to do it. Not a big deal for me as they will stay at one height. Other than these small issues, the stairs are amazing, especially for the price. Highly recommend these for anywhere outdoors where stairs of this size are needed.