# Inertia - Source proto: `rb/api/geometry.proto` Geometry type: inertia. Inertia tensor components (kg*m^2) | Field | Type | Label | Description | | ----- | ---- | ----- | ----------- | | ixx | [double](../scalar-value-types.md#scalar-value-types) | | | | iyy | [double](../scalar-value-types.md#scalar-value-types) | | | | izz | [double](../scalar-value-types.md#scalar-value-types) | | | | ixy | [double](../scalar-value-types.md#scalar-value-types) | | | | ixz | [double](../scalar-value-types.md#scalar-value-types) | | | | iyz | [double](../scalar-value-types.md#scalar-value-types) | | |