of the cap 23 thus an information process connection with a reading erasing and encoding apparatus can be achieved regardless of the angular position of the caddy fig2 shows an exploded view of the assembly of components forming the caddy 1 according to the present invention to assemble the components first the cap 23 is inserted from below into the opening 24 of the base plate 10 this cap 23 must move past a bead 24 39 whose inside diameter is slightly less than the outside diameter of the cap 23 if however the cap 23 is introduced vertically to its latter position in the caddy in the manner shown in fig2 and indicated by directional arrow a then the material of the base plate 10 which is typically plastic correspondingly yields in the region of the bead 24 39 after the insertion of the cap the cap is rotated 90 u00b0 to its latter position as indicated by directional arrow b in that condition it can no longer move downward past the bead 24 39 again next the spacer ring 9 is slipped axially downwardly onto the profiled body 12 of the base plate 10 in the manner shown finally the mandrel 4 is introduced axially downwardly into the opening 24 of the base plate 10 in the process because of their shaping the elastic legs 13 deflect inwardly at their conical terminal ends which is made possible by the intervening slits 14 vertically disposed drive ribs 18 are formed at circumferential spacings on the outward annular surface of the mandrel body 8.