poles on the inside diameter and common poles on the outside diameter with small gaps between the magnets as shown in fig1 the annular groove 96 which receives the magnets 95 does not extend completely through the annular member 82 and the outer edge faces of the arcuate magnets 95 are slightly recessed from the end surface or face of the annular member 82 the recess is preferably on the order of 0 005 u2033 to 0 007 u2033 the magnetic attraction between the permanent magnet member 82 and the strike member 84 provides for an attraction of substantial force requiring a tension force greater than 100 pounds to separate or pull the body members 12 and 14 apart preferably the attraction force requires over 200 pounds and on the order of about 240 pounds of tension force to separate the body members 12 and 14 after the body members 12 and 14 have been separated as a result of the axial tension force it is apparent that the magnetic coupling system 80 provides for conveniently reconnecting the body members with only a small force to overcome the forces exerted by the springs 59 and the o ring friction when the body member 12 is.