| 摘要 |
A connector (10, 110, 210, 310) includes gripping features (15, 115, 215, 315). The gripping features (15, 115, 215, 315) can comprise two surfaces (38a, 40a, 138a, 140a) that generally oppose each another. Each surface (38a, 40a, 138a, 140a) can be configured to facilitate or hamper rotation of the connector (10, 110, 210, 310) in a direction. Some embodiments can hamper tightening and facilitate loosening of the connector (10, 110, 210, 310). Other embodiments can facilitate tightening and hamper loosening. Still other embodiments can hamper both tightening and loosening. Yet other embodiments can facilitate both tightening and loosening.
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