■ GRAVITY tour pro-spec, set of 2. Grip size: 3 Details of the pro-spec processing cannot be disclosed, but the specs are (without strings): Weight: 310g, Swing weight: 299 The rackets are matched as closely as possible. A head tennis sensor is attached to the grip end. I used these rackets about once a week for about six months. I was using four rackets, so they weren't used that often. I think they are in pretty good condition. In my personal experience, these rackets maintain the user-friendliness of the GRAVITY while being customized for slightly more advanced players. They offer both stability and power in strokes and volleys. They are perfect for those who find a 300g racket a little lacking, but find that 305g or 315g rackets with a tighter string pattern don't allow the ball to fly as well.