Tecnifibre Tennis strings NRG²(PU) 12 m

The NRG² has been designed with a specific goal: to be the engine of the racket! This is the primary purpose of the NRG², the most powerful string in the range. A specific construction of over 1200 microfilaments, made from Elastyl (12% more elastic than standard polyamide). Fully impregnated with polyurethane 400 to generate power and comfort. And finally, the exclusive surface treatment: the S.P.L to provide smoothness and effective "snap back" so you don't have to keep rearranging the strings during play. Welcome to the NRG²! In gauge 1.24, it’s power in turbo mode.