They're made for people who really like to put things together and have the time and patience to do so. If you like putting together models of ships or airplanes or complicated Lego sets, then you're probably going to like these kits. All assembled by yourself, no glue required, difficult to deform, easy to save. No glue or solder needed – Parts can be easily clipped from the metal sheets. Tweezers are the recommended tool for bending and twisting the connection tabs. Final size: :8x3.8x4CM. For ages 14+.