K'nex 12467 Marble Coaster Run 3 Model Building Set

Build, create, and race with k'nex 12467 marble coaster run 3 model building set with over 300 parts, kids can design and construct 3 exciting roller coaster models featuring loops, twists, and turns. Perfect for developing stem skills in a fun, hands-on way while exploring motion, speed, and engineering concepts.Informationbrand: k'nextype: building setmodel: 12467 marble coaster run 3 modelpieces: 300 age: 7 features: builds 3 models, enhances creativity and problem-solving, stem-focused, compatible with other k’nex sets

Build, create, and race with k'nex 12467 marble coaster run 3 model building set with over 300 parts, kids can design and construct 3 exciting