ISO/TS 13399-204:2016 specifies a concept for the design of cutting items, limited to any kind of replaceable inserts for reaming, using related properties and domains of values.

ISO/TS 13399-204:2016 specifies a common way of designing simplified models that contain the following:

- definitions and identification of the design features of replaceable inserts for reaming, with a link to the properties used;

- definitions and identification of the internal structure of the 3D model that represents the features and the properties of replaceable inserts for reaming;

The following are outside the scope of this part of ISO 13399:

- applications where these standard data may be stored or referenced;

- creation and exchange of simplified 3D models for cutting tools;

- creation and exchange of simplified 3D models for tool items;

- creation and exchange of simplified 3D models for other cutting items not described in this part of ISO 13399;

- creation and exchange of simplified 3D models for adaptive items;

- creation and exchange of simplified 3D models for assembly items and auxiliary items.