Abstract: A ball cage for a telescopic rail, comprising a plastic cage buffer mounted in a recess in the body of the ball cage. The cage buffer (4, 5) consists of a stop member (5) in abutment with the rear edge (6) of the recess (8) and a buffer member (4) of a different material comprising at least one spring chamber (13).

Abstract: An overextensible, three-piece telescopic guide comprising an outer or housing bar (1), a middle bar (2) and an inner or drawer bar (3). The bars are slidable relatively to each other by two ball cages (4,5) respectively mounted between the housing bar and the middle bar and between the middle bar and the drawer bar. For the purpose of locking the bars (1,2,3) in the direction of extension, loose sliding buffers (6,7) are mounted at both ends of the two ball cages (4,5) which sliding buffers are slidable within the corresponding bars and lock the middle and the drawer bars (2,3) in both extended end positions by end stops (12,14).At each end (10) of the middle bar (2) a substantially triangular tilting member (8) is mounted, by which the guide's movement in the direction of extension is defined so that the drawer bar (2) and the middle bar (3) first move jointly outwardly until the middle bar (2) has reached its end position.