The injecting buffer (1) has a cladding (6) adjustably rotated at the internal cross section of the pipes or sewer, and a hose line (8). Another hose line (9) is inserted into the former hose line in an exchangeable manner, such that the injecting unit comes in contact with the latter hose line in a damaged spot (3) during production. The two hose lines are made from metal-armored plastic, and plastic respectively.
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