This drywall lift product IN the Industrial and Scientific category is disappointing. Thanks to my knowledge gained in practice, I realize that the design is not well thought out. While it works adequately for smaller jobs it`s not sturdy enough for more significant projects. The only pro is that it's easy to assemble. But the cons are that it's of low quality, unstable, and hard to navigate. Don't waste your money on this product, it's not worth it..