The FischerTechnik Dynamic XM is a STEM construction set designed to let you build intricate ball tracks. This German-engineered kit contains 280 plastic pieces and includes specialized components like two rotary funnels, an adjustable launching ramp that moves along three axes, and five metal balls to keep the action moving. You can use the provided instructions to assemble three distinct circuit models, utilizing the 180-degree curve and flex-rails to create fluid paths. Because it is compatible with Dynamic S, M, and L sets, you can expand your layouts as your collection grows. Weighing 0.9 kg and meeting EN71 and ASTM safety standards, this set is suitable for children aged seven and up who enjoy the challenge of mechanical engineering.