Large Elevator Marble Run Toy Set (310 pcs)Build the perfect marble drop! This building block kit contains a whopping 310 vibrant and colorful building blocks and tiles. Pieces intuitively connect together to improve hand eye coordination, motor skill training, and children's brain development. This kit includes everything as shown on the packaging interlocking colorful blocks, a variety of shapes, a chain elevator, and an instruction manual! Requires 2 AA Batteries, NOT INCLUDED. 2 4 players