The ashaway viper xt1200 features a hexagonal head shape and comes strung with the zymax 70 string to deliver exceptional strength durability and responsiveness the hex frame technology ensures extra strength in an ultra slim construction while the viper weave technology guarantees low torque and no lateral movement even on miss hits the racket weighs 89g 31oz and is head heavy balanced for more power stability and spin in addition the carbon nano tube construction provides great stren