| 摘要 |
A swivel attachment device comprising a pair of rings able to rotate freely with respect to one another around an axis of rotation defined by a central pivot-pin. At least one of the rings is in the form of a hook delineating a lateral access space. A removable closing part, composed of a spacer through which a fixing screw passes, is able to close said space performing partial take-up of the tensile forces. |
