After spending a month building four of these metal models with my grandkids, I can say they're quite a treat. They're all precision crafted and offer such a fantastic learning experience. Out of the thousands of pieces, only one model was missing a part, but the company was quick to send the missing piece our way. It's refreshing to see such dedication to quality and customer service. These models are not just kits; they're a journey into creativity and patience, especially when shared with family. The kids learned a ton, and honestly, so did I. If you're looking for a fun, educational activity, these models are a great choice.