want creative DIY educational toy for your kids? This lever ruler experiment model will be your . This product is DIY lever ruler experiment assembly model for children and students which can assembly by themselves. It is excellent to develop their practical ability and thinking ability. Features - ColorRed - Material: Plastic. - Size: 27.00X25.00X17.50 cm/10.61X9.82X6.88 inch. - Made of plastic material which is and excellent, no easy deformation, funny and wonderful. - Manual assembly model, greatly exercising kids' varieties of abilities, stimulate children's interest in learning and curiosity. - It is easy to assemble, with disassembly and assembly, improve children's hands-on ability. - Also, funny and teaching lever ruler experiment DIY model, bringing you fantastic experience and fun. - The good and creative present for kids and students, children will be happy for that and love it. Package list: 2 x bases 2 x brackets 2 x levers 4 x adjusting nuts 20 x code hooks