Slab Dream Lab 10X10 - 4 Pack Roads GrayDurable baseplates fit with all major brand building brick brands and tightly grip bricks. They are stackable and clip together to expand infinitely. This 4_Pack is perfect for building modular cities!• Casepack Quantity: 5• Product Dimensions/Weight: 10.25 L x 10.25 W x 1.2 H / 1.67 lb• Inner Pack Dimensions/Weight: 10.32 L x 10.32 W x 10.75 H / 15.53 lb• Age Grade: 8 • Made In: USA