Does anyone know the name of the round spacer-like piece which is often used to create those sharp edges on the end of the drivetrain arms? I’m pretty sure this is like a spacer with screw ends.
Looking at the way it’s connected with a standoff, the piece is probably a Star Drive Shaft Collar. Because a shaft collar and standoff both have the same threading, it’s possible to mate them together using a long screw or couplers.