Parametric Z-axis coupler (stepper and threaded rod coupling) single object

This is a remix of Parametric Z-axis coupler (stepper and threaded rod coupling) by aspesilorenzo. It's only the M8-30mm version in a single, rotated object. The original version consists of the same object twice, standing, which caused mine to break at the screws because of wrong layer alignment (and me using too much force). It absolutely kills any Z-Axis wobble and all my thanks for this simple but great model goes to aspesilorenzo. If you tip me for this one, tip him, too ;)