Modeling Toolkit Bevel Tool

The Bevel tool lets you chamfer vertices or round the edges of a polygon mesh.

See Open the Bevel Tool and Bevel polygons with the Modeling Toolkit.

Segments
Specifies the number of segments that are created along the edges of the beveled polygon. The default is 1.
Offset (Fractional)
Specifies the distance between the original edge and the center of the offset face (the size of the bevel). The Offset (Fractional) value is limited to a range between 0 and 1. The default is 0.50.
Width
Specifies how far back from the current position of the vertex the chamfer is created.
Note: This option is only available when a vertex is selected and the Bevel tool is active.