1. Liner: steel block
2. Surface: rubber
3. Function: swing practice aggravator, placed in the club head, there is a real swing feeling during empty swing practice, long-term training can strengthen the swing strength
4. Features: the rubber outer layer protects the club, increases practice and improves swing strength
5. Weight: about 145g
6. Size: about 6x1.5 cm
Specification:
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