No other tools required. You just need to wind up these toys, then they can perform different action like walking. The wind up toys can also be used to decorate the store or home. Brighten any room with these toys, use them as kid’s toys or room decorations. Features - ColorAssorted Color - Material: ABS. - Size: 5.6x3.4x3.4cm. - Includes 12pcs Wind-up Toys, Green+Red+Beige, 4pcs for each pattern. - Made of premium plastic, smooth and comfortable,will no parts to hurt your baby. - Due to the cartoon design and workmanship, these toys look cool. - party gift: Just wind them up and watch it in a multitude of directions. - Varied uses: perfect for kids party favors, pinata filler, carnival prizes, treasure box prizes, Christmas stocking stuffers, Halloween toys. - Safety: up toys are made with safe plastic, which is durable. Recommend for children 3 years and up. - Warm Tip: Dear buyer, due to lighting effect, monitor’s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 12 x Wind-up Toys