The Children's Science Experiment DIY Bicycle is a creative and educational toy that stimulates children's creativity and scientific exploration through DIY bicycle belt drive technology. It is suitable for students to use, helping to develop their hands-on and practical skills. Features -Color:Beige -Material:Wooden -Size:19.00X11.00X4.00cm/7.47X4.32X1.57in -Inspires creativity and scientific exploration through bicycle belt drive diy technology, very fun to play. -Helps students better understand physics principles through experiments and production, very useful. -Enhances students' hands-on and practical skills by using this diy bike model with science experiment. -This mechanical bike model can provide students with a hands-on learning experience in the field of physics. -Students to assemble and create their own miniature mechanical bike model with belt drive technology. Package list: 5 x wooden bike model