Ring diameter: 9 inch/230 mm Hand Strengtheners Wing chun kung fu training equipment yewen sau sticky Siu Lum Kung Fu Rings taiji wing chun wooden wing chun rattan ring 9inch. Smooth,strong and finished Wood Ring in good performance.Worn for wrist weights during forms practice to toughen up the forearms. Excellent item for Wing Chun training,help teach the practitioner to keep their legs properly linked in attacks and defense. Chinese kung fu sports training sports goods.The original strength training in Chinese Martial Arts.