With Pro Line II Rough Kirschbaum adds some texture to the surface of one of their most popular co- polys. Like the standard Pro Line II, this string's low-powered response allows big hitters to take huge cuts at the ball without fear of overhitting. This not only enables the player to swing faster in the service of pace and spin, but it also makes it easier to close out points with ambitious shots. Although this is a firm string, our playtesters loved the feel and reported zero problems with discomfort. Big swinging intermediate and advanced players looking for control and durability should give this string a serious look.