Excellent sports performance: from the disk stability, improved disk drive of the endurance time lengthened to allow sufficient time to judge dog. Strong durability: materials research and development to reduce dog bites after being glitch. Feel comfortable grip plate: plate movement without affecting the performance based on the round rim handle, curved to adapt to the tiger's mouth, and the strengthening of Rick Hyde line (that is, the lines of the disk) to disk handle, drag, slip has been strengthened .