which is positioned against plug body first end 13 and top plate 29 positioned against plug body second end 15 plates 27 and 29 are typically washers annular opening 31 is formed in bottom plate 27 and annular opening 33 is formed in top plate 29 also as shown in fig2 rod 35 is positioned loosely through axial opening 21 accordingly rod 35 is moveable within axial opening 21 rod 35 includes rod first end 37 and rod second end 39 rod first end 37 extends through annular opening 31 in bottom plate 27 while rod second end 37 extends through annular opening 33 in top plate 29 an appropriate fastener such as nut 41 is secured to rod first end 37 along threads not shown cam lever 43 is moveably secured to rod second end 39 by pivot pin 45 pivot pin 45 is inserted through hole 47 in rod second end 39 and through holes 49 a and 49 b not shown provided in cam lever 43 cam lever 45 includes handle 51 cam lever body 53 and cam surface 55 movement of cam lever 43 in the direction of arrow 59 urges cam surface 55 against compression surface.