These Composite clubs have been precisely engineered. Each club is individually hand assembled around a hardwood dowel core. This core provides for linear rigidity and construction of our spring-flex handle feature (which makes the club easier on your hands). The main bodies are custom molded in a tough polyethylene. Knobs are machined from a durable dense foam and secured to the club with our unique screw/washer assembly. Our tapered foam end provides maximum impact protection. Each set is precisely weight matched. Tri-Laminated Laser Decoration. THESE ARE OUR BEST CLUBS, YOU WILL LOVE THEM!