The gamma tnt2 127mm tennis string 110m reel features the elastalon centre core as well as outer wraps with pearl coating for enhanced durability it has a gauge of 17 127mm and provides excellent playability durability and control this all around string is suitable for all playing styles and incorporates the tnt2 technology which significantly improves dynamic elasticity storing energy and dynamic resiliency returning energy to the ball to deliver maximum control accuracy and incr