Hongzer Chiropractic Adjusting Tool, 6 Levels Manual Spine Activator Massage Wand for Neck, Back, Shoulders, JointsHIGH QUALITY WORKMANSHIP This is a manual massager which designed based on the massage method of human hands but more effective. It's a tool with good corrosion resistance, heat resistance, low temperature strength and mechanic performance. It can stimulate nerve cell and the normal function of an organ resulting in rapid recovery the body function. It is a 304 stainless steel machine. PHYSICAL PRESS MASSAGE PRINCIPLE Imitation human hand massage,