Abstract: For the collective routing of bundles of wires, it is known to use partly open tubes composed of mutually outwardly-flexible, partly cylindrical elements which are slotted to enable the insertion of wires herein. Known configuration have certain disadvantages which are overcome by the invention, in that use is made of alternating modular elements of two completely different types, i.e. stiff wire-holding elements (2) with a core part (6) having radially-extending wing parts and shield-plate parts (8, 10), and intermediate distance elements (4) in the form of flexible rod parts for releasable assembly with the ends of said core parts (6). There is hereby achieved a tubular structure which is flexible in all directions in a non-jangling manner and which can freely be lengthened or shortened.