Attached Blender file with prepared PBR materials. However it can be also used in other 3D software using attached files in other popular formats. Previews are rendered using Blender Eevee renderer.
Pen is modeled with inside parts. Model is detailed with highly optimised mesh having 24k triangles (12,7k vertices).
Keeps realworld dimensions (14cm - 5,5'' length).
Scene used to render preview is inside given .blend file. Pivot point is positioned on the floor.