The Karakal TEC series incorporates 4 Nano-graphite nodes into its design which smoothes out vibration and dramatically increases stiffness for greater power and control.Engineered to include the "muscle Tec" string system and designed with a power shaft and power wings. Also includes a built in frame anti-vibration Dampner which dramatically reduces vibrations during a shot. Manufactured with a one-piece construction to include a mid-plus head of 470 square centimetres with a square string pattern of 14/18. Fitted with the world"s number 1 PU grip, and including a full racket cover, the TEC TOUR 140 is manufactured for a powerful performance. Frame Weight: 140 grams