Key Marble run and building block clamp features:

• Stabilize Tall Structures - Prevents marble run tracks & wooden block towers from shifting or collapsing
• Perfect for Expanding Builds - A must have for creating larger, taller , more complex designs
• Easy use - Simple snap on design encourages independant play and creativity
• Durable & kid-safe Materials - Made with high-quality, non-toxic plastic ensuring long lasting safe play

What's in the box
6 x Clamps