These are awesome, high quality, custom made aluminum spacers. They are
great at making sturdy standoffs/spacings for your projects.
The total height/length of the spacer is 9mm
Outer Diameter is 10mm which makes a very stable platform.
Inner Diameter is M5 to give a thicker wall to keep the m5 screw snug and centered.
Main purpose is to put it in middle when creating double wheel assembly to ride on long side of 2040 or short outside of C-Beam profile
These spacers can be used in all sorts of builds.