77PCS educational STEM building block rolling ball tracks 679-701
Product Features:
- Space rail pipe building block tracks ball running toy set is combined with 77 pieces of blocks
- PP pipe is 360 degree rotating with diverse building designs
- There are 4 colorful running balls in this toy set
- DIY educational building block toy set, which is a good toy to train kids’ concentration, imagination, creativities and hands-on ability
- The best option to be a gift for birthday gift, Chrismate gift, and parent-child interactive toys
