Black Knight - Tennis String (Poly): for The Tournament Player

An innovative, high performance string designed for the modern tournament player. The latest 6 sided co-polyester blend ensures a control-oriented playing experience, access to spin and unexpected arm-friendliness. Exceptional durability and tension stability will guarantee the avid player an ultimate, long lasting playing experience.

• TRU PRO Black Knight (formerly Tier One Sports): This 6 sided co-poly string is arm-friendly (based on USRSA lab results), it holds tension extremely well (based on USRSA lab results), offers outstanding durability AND provides the high level player with precise depth and directional control. It is common thought to assume that the string would respond very "springy" and loses tension quickly due to its softness. Quite to the contrary, this is one of the string's strengths!
• KEY FEATURES: Great directional and depth control, exceptional durability, access to spin, arm-friendly.
• RECOMMENDED PLAYING LEVEL in 16 gauge: NTRP: 5.0-7.0, UTR: 9-16+ (advanced - pro level)
• RECOMMENDED PLAYING LEVEL in 17 gauge and 18 gauge: : NTRP: NTRP: 3.0-5.0, UTR: 2.5-9.5 (intermediate - advanced level)
• LENGTHS: Sets: 12.2mm/40ft, Reels: 200m/656ft, GAUGES: 15g (1.33mm), 16g (1.28mm), 17g (1.23mm), 18g (1.18mm), COLOR: Black.