Metal Made - Our building toys set includes 258 parts and pieces, such as nuts, bolts, screwdriver and wrench, etc. Made of metal, which can stand rough play without worrying about easy collapse. A great careful crafting STEM building kit, worth paying a little more compared to full plastic versions. Bigger Size - This model airplane measures over 4" high, 13.8" long, and 15.8" wide, making it a beautiful display piece to show off with pride. I believe it will be bigger than you expect. Really suitable for model aircraft fans and DIY enthusiasts. Clear Instructions & Easy To Follow - We have prepared clear instructions for the kids, showing the diagrams of each step, and everything is clearly marked. This teaches them to follow directions and ensures they won’t become overwhelmed or frustrated while they play. Wrenches and screwdrivers are also included for children to assemble parts easily. Support STEM Education For Kids Aged 8-16 - The kids think carefully and patiently assemble the aircraft from the screws and gears. They are learning STEM skills during this about 5 hours assembling process! At STEM aspect, we believe in empowering kids to promote their creative learning and brain development. Great Collection - Designed with accuracy and built with careful attention to detail, this aircraft building set is a valuable collection and souvenir for model aircraft enthusiasts by imitating the real aircraft carrier and reservation the complex structure of the aircraft.