Disc

Inner Radius	Defines the radius of the hole in the disc.
Outer Radius	Defines the overall radius of the disc.
Rotation Segments	Defines the number of subdivisions of the object along its circumference.
Disc Segments	Changes the number of subdivisions of the object in the lengthwise direction.
Main Axis	Gives an ability to select the object’s initial orientation in space, without using transformation matrix. .
Enabled	When enabled, disc will be created. If not checked, this will be empty node.