The magnetic cup tip of HACI Magnetic Acupressure Suction Cup(MASC) is made from rare-earth permanent magnet alloy with surface magnetc field = 2500gauss . The magnetic line penetrates human body from 6 to 9 cm, equal to the depth of traditional acupuncuture and moxibustion. Meanwhile, you just flatten the pressurized bag and put the Cup on the skin, then release the fingers and the MASC could be fixed on body without pricking skin. People can acupuncture with several or dozens of the Cups at one time, stimulatingacupoints same as by many needles simultaneously in tradition acupuncture and moxibustion.www.rightbestmedic.com