1. Swing practice stick, the head can be adjusted in difficulty, and the hands can be used to practice grips
2. Correct the grip, you can get started in 3 seconds, and the grips is designed with a grip posture, which makes the swing more stable
3. Super elastic fiberglass shaft, strong flexibility, with a certain degree of fault tolerance and good assistance, playing more stable and easy to control
4. Sounds when swinging correctly, when the swing posture is correct and strength is sufficient, the ball head will make a noise. Regular use can improve arm strength and exercise waist muscles