Qi Gong brush metal a.k.a. Hardening Whip Hardening stick, called Shaolin Qigong stick for iron jacket training (thickening and hardening of skin and promoting flow of Qi and Blood in meridians). Thin rods assembled together forming a whip, massage your body with tapping harder and harder. If one trains regular, the tissues will harden. Weight : 0.850 kg Length : -50 cm 不锈钢气功拍打棒