Which tool is used to adjust an edit point between two clips without affecting the rest of the timeline?

The Rolling Edit tool is specifically designed to adjust the edit point between two clips while preserving the overall length of the timeline. When using this tool, the in and out points of the adjacent clips are adjusted simultaneously but without impacting the surrounding clips. This means that you can change the timing between two clips without shifting other edits that are further down the timeline.

In contrast, the Cutting tool and the Razor tool are primarily used for slicing through clips to create new cut points, which can disrupt the editing flow when adjustments are made. The Slip tool allows you to simultaneously adjust a clip's in and out points while keeping its overall duration constant, but it modifies the clip itself rather than the edit point between two separate clips. This distinction makes the Rolling Edit tool the best choice for the task described in the question.