• Stiffness: SF
• Weight / Grip Size: 4U / G6
• String tension LBS: 4U upto35 lbs(16kg)
• Frame Material: Graphite+Resin+Fiber Reinforced System (FRS)
• Shaft Material: Graphite+Resin+6.8 SHAFT

The combination of box head and FRS technology offers exceptional durability and supports high tension stringing, and the introduction of FREE CORE further enables powerful and fast attacks.