The U.S. Kids TS57-V5b Set is designed for players who show intermediate-to-advanced skills, play competitive golf events, and have higher-than-average swing speeds. For experienced players who need stronger clubheads and shafts, Tour Series offers advanced technology equipment while keeping all the benefits of the U.S. Kids Golf fitting philosophy. The shafts are frequency matched with a low flex point for optimal ball flight. Graphite Shafts for a lighter and softer feel. U.S. Kids Golf knows that not every junior golfer is a beginner, and the Tour Series is a natural bridge that prepares a player for adult clubs.