The GB3K is the strongest, most powerful racquet yet produced by Gearbox. Technology meets art with the GB3K. The GB3K name originates from the 3K Woven Carbon Fiber found at the head of the racquet. The use of this special carbon fiber material reduces unwanted vibration in the hand, giving the GB3K collection an Ultra Smooth, Solid Feel. The 3K Woven Carbon Fiber also enhances the frame's strength and overall durability. The GB3K also features a redesigned throat lay-up, providing an ideal balance of stiffness and flex in a racquet and giving you the most Powerful Gearbox racquet to date.