tube 54 housing the roller assembly 60 is attached to an adaptor member 76 having external threads and an o ring seal 78 the threads 76 are cooperative with the internal threads of the body member 80 of the coupling assembly 56 a second adaptor member 82 is slidably connected to the body member 80 and sealed with a second o ring 78 u2032 and fitted with a rotatable nut 84 having internal threads cooperative with external threads 86 located on the body member 80 the second adaptor is then adaptively attached to other tubular members of the riser assembly 10 it should be noted that although any arc with any radius desired may be used to convey the wire line cable around such bends it may be more practical to make up 90 or 180 degree assemblies and use combinations thereof for various applications which may include applications where each end of the assembly is in a different plane as seen in fig1 the conveyance of a wire line cable around a bend within a pressurized tubular member may be achieved by the alternative method illustrated in fig1 as seen here the cable 16 is threaded through a series of ball rollers assemblies 88 each ball roller assembly 88 has a plurality of rolling balls.