About the product: The ball has a diameter of approximately 2.7 cm (1 inch). Each jack measures approximately 2 cm (0.8 inch) in width. This size is easy to handle and ideal for enjoyable gameplay. The ball is red, and the jacks include 20 gold-colored and 20 silver-colored pieces per set. Function: The jacks game helps support hand-eye coordination and physical responsiveness in children. It provides an engaging and fun activity during playtime. Suitable occasions: This jacks game set can be enjoyed outdoors on sunny days or used as an indoor activity during rainy weather. It offers entertainment for children in various settings. Easy to play: The game can be played individually or with friends. It requires minimal equipment and has remained a popular children's game over the years. Package includes: 4 jacks game sets. Each set includes 40 metal jacks and 8 rubber bouncy balls. The quantity provided offers long-lasting use for multiple players.