These balls were used for practice, etc. on an omni court for about 2 months. There are 70 balls. Please judge the condition from the actual product photos. There are a lot of them, so I think you can use them for serve practice, ball feeding practice, etc. Also, I think they can be used for baseball toss batting, etc. Also, the lowest price for 48 balls on Kakaku.com is about 6,700 yen, which is about 135 yen per ball. HEAD PRO balls are high-quality practice balls that prevent air leakage by about 33%, enabling long-lasting stable bounce and control. High-quality materials are also used for the felt, achieving durability and the feeling that Japanese players prefer. "HEAD PRO" was used as the official ball at the "China Open 2014" held in Beijing, a WTA Premier tournament (women's). As they are ITF-approved balls, they are match balls that can of course be used in international tournaments. In Japan, they are positioned as practice balls because they are not JTA official, but their high grade has been proven.