The Black Knight Quick Silver TC double pack comprises of two high quality rackets incorporating the Thermal Core technology which not only strengthens & stabilises the frame, but also provides faster racket recovery during impact. The rackets have a head size of 75.5in 2 (487cm 2) & come strung with the Power Nick 18 string delivering enhanced durability & excellent playability. in addition, the Extreme Modulus graphite effectively reduces vibration, while the n XS Nano Carbon makes the rackets both stronger & lighter. They are supplied with the Rad Cushion grip that guarantees extra tackiness.