Let the construction play continue with your little one's favorite dump truck, construction site toy! This replacement ball set is compatible with the Vtech Drop and Go Dump Truck Toy so you can make sure your little one has enough “rocks” to keep them entertained during playtime! This bright and colorful ball set features 6 vibrantly colored balls with smooth surface detailing to give them a ‘rock-like' appearance and bring more fun to your little one's construction-themed playtime! Colored balls help teach kids colors and keep them engaged. They are perfectly sized for little hands to grasp and for compatibility with the Vtech Dump Truck! These balls can also be used with other toddler construction themed toys and will work with most toddler pound toys. These balls are not recommended for use with the VTech Pop-a-Balls Pop and Surprise Ball Center (balls are the same size, but heavier and not as pliable as the originals) or the Vtech VTech Pop-a-Balls Drop and Pop Ball Pit, Green (original balls are larger and more pliable).