I purchased a Zinus-Justina-quick-snap-ensemble-bed-base-frame about 6 months ago. What Superb Engineering! I'm in my 60's and despite the packaging saying a team effort was best, I had it put together effortlessly and quickly on my own. The instructions were simple, accurate, and logical. I couldn't be happier. No squeaks, no movement, stable and strong. Easy to maneuver when I needed to.  It arrived only a few days after ordering to my rural location. Totally happy with the product.