So you lost your jack. Way to go. (Just kidding. It happens to the best of us.) If you lose a beach bocce ball jack or want extras, SeaTurtle Sports has your back. These replacement jacks are the same ones that come in our full-sized and four-ball sets, about one inch in diameter, and are available in the original deep purple color. Each jack is, like its misplaced predecessor, made of tough synthetic polymers and durable and impact resistant.