Marble Race Run Blocks

SPECIFICATIONS   Recommend Age: 3-6Y Recommend Age: 6-12y Block Size: Small building block（Compatible with Lego） Gender: Unisex Model Number: Ball slide building block Material: plastic Plastic Block Shape: Self-Locking Bricks       Attention: 1. [Product material]: Environmental protection ABS raw materials. 2. [packaging description]:168-336pcs original box   About this item: 1.Build a World of Fun - Inspire your young creator with this construction toys that will build their imagination, creativity and fun! With multiple ways to play, this set comes with printed picture instructions which makes even younger builders feel like real master builders… awesome! 2.A Smarter Way to Play - Designed to spark logical thinking, curiosity and creativity, your new stem construction toys for boys and girls are the smarter way to play. Many ways to build your robot transformer means more hours of fun! 3.Safe, High-Quality Toys - Rest assured your stem building blocks set are made w