In the Autodesk Fabrication products, ancillary kits refers to a group or a multiple selection of ancillaries that can be taken off together. Ancillary kits are commonly used to build up additional ancillary requirements that allow you to be more efficient when taking off items.
The following dialog shows some examples of Ancillary Kits in more detail.
Ancillary Kits for Support Rods
Ancillary kits can also be used to specifying support rod diameters. You may want to use this method of specifying support rods in situations where it is important to maintain updated costing data for supports. For more information, see Controlling Support Rod Diameter with Ancillary Kits