To provide an inexpensive bendable and expansible universal joint having the high degree of freedom, for connecting pipes for a communication cable.

Two sets of joint sets each of which is composed of a first spherical part provided joint pipe 10 in which a first spherical part 11 is formed on one end, and a second spherical part provided joint pipe 20 in which a second spherical part 21 to be slidably fitted to the first spherical part 11 is formed on one end are arranged between two pipes C, D, the end on one side of a slide pipe 30 is fitted to one second spherical part provided joint pipe 20 so as to be freely slid (expanded) in the longitudinal direction, and the end on the other side of the slide pipe 30 is fitted to the other second spherical part provided joint pipe 20 so as to be freely slid in the longitudinal direction.