Orb Factory-Curiosity Kits: Sonic Powerballs. Create fun powerballs that make crazy sound effects when bounced! Makes five sonic balls. This 11x8x1-3/4 inch package contains one large sonic powerballs mold, one small powerballs mold, two sonic powerballs sound modules, five bags of colorful crystals, one resealable storage bad, one tube and illustrated instructions. Recommended for ages 5 and up. WARNING: Choking Hazard-small parts. Not for children under 3 years. Imported.