insert 34 is configured to fit within the internal cavity 14 of the outer housing 12 and is therefore sized to be smaller than the internal cavity 14 of the outer housing 12 for example in an embodiment including a cylindrical receptacle 10 and a cylindrical floating insert 34 the circumference or diameter of the outer wall 36 of the floating insert 34 is smaller that the circumference or diameter of the inner wall 24 of the outer housing 12 in this way the floating insert 34 is movable within the outer housing 12 providing a maximum tolerance of 2y for mounting objects 62 this characteristic is illustrated in fig6 a 6 b and 6 c the floating insert 34 is larger however than the aperture 16 defined by the outer housing 12 such that the floating insert 34 is retained within the internal cavity 14 of the receptacle 10 by its first rim 18 referring again to fig6 and 7 the floating insert 34 also defines an internal cavity 35 and an aperture 37 that opens into the internal cavity 35 of the floating insert 34 the aperture 37 is typically defined by a lip 38 proximate one end of the floating insert 34 that extends inwardly from the outer wall 36 of the floating insert 34 and circumferentially about the aperture 37 the internal cavity.