The gamma tnt2 132mm tennis string 110m reel incorporates the tnt2 technology which improves both dynamic elasticity storing energy and dynamic resiliency returning energy to the ball to provide maximum control accuracy and increased speed the string ensures great power feel and control and features a gauge of 16 132mm it has an elastalon centre core and outer wraps with a pearl coating for enhanced durability and comes in a 110m 360ft reel