摘要 |
The system has a connection (3) provided with reception markers (4-6), which are connected with safe ends (7-9) of the connection of percussion head (1). A unit forms an inflatable roll. Locking straps (11, 12, 13, 14, 15, 17) are mounted on a mounting plate of the connection for locking an axial position of the safe ends with the corresponding marker.
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