ROKR Mechanical Models,3-D Assembly Wooden Puzzle,DIY Assembly Toy,Mechanical Gears Constructor Engineering Kits,Brain Teaser,Best Gifts for Adults & Teens

【NATURAL WOOD & NO GLUE ASSEMBLE】 Utilizing safe and environmentally friendly wood from all-natural trees without any added toxins, even children can safely play with sets without fear of exposure to harmful chemicals or dyes. The whole set is extremely well designed, with very tight tolerances and good machining. The interlocking mechanisms are pretty ingenious. Assembling without glue and chemicals. 【MOVED BY MECHANICAL POWER】 High quality car model kits enhance practical ability and patience to assemble it. No battery or other power needed. With inner machine (wind-up spring), self-propelled, moved by mechanical power. Please note that if you want it move smoother, you may need to use a little wax. 【LASER CUTTING & DETAILED INSTRUCTIONS】 The set comes packaged with clear, simple, and very detailed English instruction as well as illustrations. Will guide you how to do step by step. The pieces are easy to remove from the sheet of plywood, the laser cutting is precise and clean (no residue smoke burns). Full of details which distinguishes it from other 3D puzzle toys. 【INCREDIBLE DIY EXPERIENCE】 Building these sets will draw out and propel your child’s ability to plan and build their structure or vehicle like a true architect or engineer. Suitable for teens ages 14+, 3D craft kit model is a good way to exercise teens and child practical ability enhance imagination, patience, and creative thinking. 【Great brain teaser & Gift】 The Mechanical series present a unique and creative gift for your child, boys, girls, friends, and family members who are model builders or puzzle lovers. A great choice as a Thanksgiving Day Gift, Birthday Gift, Christmas Gift, Father's Day Gift, Back to School. It can also be used as event prizes, projects, or handicraft class in school. What you will accomplish is a very beautiful artwork! You can even paint some colors to make yourself a unique one. Recommended age – 14 years old and up.