to receive a length of fiber optical cable 10 as can best be seen in fig2 cable 10 extends through conduit 18 such that a portion of cable 10 protrudes from conduit 18 to allow cable 10 to be cut to the desired length now also referring to fig2 and 3 side walls 26 and 28 respective outwardly projecting bottom flanges 27 and 29 extending substantially along the entire length of conduit 18 base member 22 has a relatively flat bottom portion 34 and opposed upstanding side walls 36 and 38 side walls 36 and 38 cooperate with bottom portion 34 to define a substantially u shaped channel 44 side walls 36 and 38 have respective inwardly projecting top flanges 40 and 42 extending substantially along the entire length of conduit 18 cable 10 is inserted into base member 22 so that cable 10 is received within channel 44 retaining member 20 is then inserted into base member 22 by compressing respective lower portions of side walls 26 and 28 including flanges 27 and 29 inwardly and inserting the respective lower portions of side walls 26 and 28 into channel 44 when retaining member 20 is positioned with respect to base member 22 such that respective lower portions including flanges 27 and 29 of side walls 26 and 28 are received within channel 44 side walls 26 and 28 exert a positive pressure against the side walls 36 and 38 respective top surfaces of flanges 27 and 29 define respective shoulders 27a and 29a and respective bottom surfaces of flanges 40 and 42 define respective shoulders 40a and 42a shoulders 27a and 29a engage respective shoulders 40a and 42a to prevent retaining member 20 from being disengaged from base member.