Tai chi pestle needle brass pure copper solid seven obsidian mixed yuan pestle massage massage stick with acupuncture needle bar KuiXing pen dorje is gross weight (including packaging), 250 g product size: 10.7 cm long, 12 cm long, 10.3 cm long, 8.9 cm long models: seven obsidian mixed yuan pestle, the five-star three pestle, vajra, KuiXing pen the baby by the solid copper bar and plating on the surface treatment (for long time use will turn black oxide copper surface, so to electroplating processing) leather packing, convenient to carry seven obsidian mixed yuan pestle: a head of a mass of arc on the other side for more than seven gods of the parallel process technique with the five-star three pestle: With a length of 12cm, one end is triangular and the other end is quincun-shaped, and the other end is quincun-shaped. The parting method is usually used with a diamond pestle: it is 10.3cm long, one end is circular arc and the other end is blunt and conical, and it is usually used for pointing, lifting and closing. Quxing pen: it is 8.9cm long, with one end being circular and the other end being blunt and cone-shaped. It is called needle body. The fixed part of both ends of pestle and needle is called needle ellipticity. The tip of the pestle needle is called the tip of the needle, which is the part of the pestle needle that contacts the acupoints directly. The pestle and needle has different names due to different methods and functions in clinical practice. There are four pestle and needle tools in one set