Interesting Scientific ExperimentTower Bridge of London

Perpect gift for childen to learnknowledge through this experiment to enjoy DIY thus their hand-making ability.Features:Kids can not only play with it bu alsoknow some knowledge from it.Learn physics knowledge with fun.High quality wooden material made withno toxic.It can be DIY the colour by hand perceiving the color.To improve kid's ability of hand-making.Specification:PackingSize:300*300*50mm/11.8*11.8*2.0inPackage Weight:43.8g/1.5ozPacking List:1*panels1*cotton rope7*Axles1*InstructionSeveral gasket pulleys