This DIY pulley crane science experiment kit is an excellent education tool for students. It allows them to explore the principles of physics and mechanics through hands-on activities. The kit includes various components to build a functional crane, enhancing their understanding of lifting systems and mechanical advantage. Features -Color:Light Yellow -Material:Wood -Size:31.00X10.00X10.00cm/12.18X3.93X3.93in -Note: battery is not included -Diy crane kit: inspire children's interest in physical principles with a pulley , enhancing their hands-on skills and innovative thinking -Complete science kit: the kit includes all necessary materials for simple diy projects, meeting children's needs for scientific exploration -Easy to operate science kit: set is easy to use, making it suitable for family bonding and learning scientific knowledge together -Safe and science kit: made from wooden materials, ensuring the product's safety and durability for long term use -Education use: ideal for school science courses or extracurricular clubs, providing students with an intuitive physics experiment experience Package list: 1 x set of homemade pulley set