Tecnifibre NRG2 is one of the most comfortable and reponsive strings available. This string offers superior feel, power and playability. Silicon Pyrogene Lubritec, SPL, technology reduces elongation and improves durability by 40%. Also, its micro-composite fibers provide high resiliency for increased power, while the polyurethane in the string reduces shock during ball impact. Tennis Category: Tennis ~ Helpful Tips, Links
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