| 摘要 |
A HVE tip that includes two tubular members, each of which is formed with a straight portion and a connecting portion, and one of the connecting portions is telescopically received within the other connecting portions so that the two tubular members can be rotated relative to one another between a plurality of configurations, including a straight configuration in which the axes of the two straight portions of the two tubular members extend generally parallel to one another and in the same plane, and a right angle configuration at which these axes extend generally perpendicular to one another in the same plane. An indexing connection is provided between the two connecting portions.
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