Description: 【Material】3D Assemble Tank Model Kit is made of Wood, lightweight structure, battery operated (But it's not included) 【Size Information】This Wooden Tank Model DIY Science Toy (dimensions after assembly) measures approx 8cmx16.3cmx7.8cm/3.15inchx6.42inchx3.07inch 【Engaging DIY Experience】Dive into a hands on assembly adventure with this wooden tank model featuring a rotating turret and belt drive system, great for enhancing creativity and problem solving skills 【Fun and Educational】Challenge yourself with this DIY Hand Assembly Rotatable Turret Wooden Tank that can take hours to complete, depending on your speed and patience. It inspires children to plan and build like architects or engineers, enhancing their problem solving skills 【Nice Gift】This Belt Driven Wooden Tank Material DIY Kit makes an ideal gift for Thanksgiving, birthdays, Father's Day, or simply as a thoughtful present for boys alike as well as friends and family members who enjoy crafting or woodworking projects Package Includes: 1 Wooden Tank Model DIY Science Toy Note: 1.This is not infant toy , please take away from children to avoid eating. 2.Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.