Same design as harbor freight. I have an older model from Harbor Freight that doesn't fold up I really like, the legs are supported with full square tubes. These fold up ones put all the weight of the engine on two bolts. It's probably Ok like that, but looking around the web, I don't see any other type with four legs and that much weight. I would change out the four bolts on the legs for grade 8 USA made bolts. I replaced all the bolts on my hoist and stand when after I got them, I didn't like the metric non-marked bolts. My hoist even had few starting to bend after the first use.