The Primorac is named after the legend Zoran Primorac and it is made to play with a shakehand grip the same way Primorac did. Shakehand players will find this racket to be the perfect companion to their playing style. The African Wood used to make this blade sticks the ball to the racket longer and gives you more control and precision. The Primorac is an excellent all-round offensive blade that is Butterfly's overall best-selling shakehand blade.
JTTAA stands for "Japanese Table Tennis Association Approved". Blades that are used in local and national tournaments in Japan must all be registered in the Japan Table Tennis Association. In the association they actually have crew to select blades in order to ensure the quality of the baldes, both imported or locally-made, are premium. Unqualified blades are not allowed to registered. So JTTAA is indeed a sign of quality, Japanese are so conscious in their effort of quality control.