Easy to Assemble: The metal sheets of 3D puzzle metal model kit are made of superior stainless steel and all metal parts would be easily clipped, no glue or solder need during assembly. Move-Your-Hands & Brain Together: Release the your working pressure, enjoy hours of fun with you family and friends from the building process of 3D metal puzzle, also would encourages your hands-on ability and logical thinking. Recommended for Ages 14+: Even though you are a beginner for metal puzzles, there is no problems for you to successfully assemble them. Great for training and improving teens stereopsis and manipulative ability. Build Model Size: 9.258.265.11 inch. Ideal Gift and Fine Ornament: The finished products are really beautiful and delicate, decorate them on your desk or shelf, artwork made by you. It will be a nice gift for Birthday, Valentine's Day, Father's Day, Teacher's Day, Christmas, Thanksgiving, etc. Tips: Assembling tools are recommended, but not included. Parts can be easily cut off the sheets. Tweezers or hair clippers are the recommended tool for bending and twisting the connecting tabs.