In the same time you take to read this sentence you can improve the quality of your chain drive, as ROLL-RING chain tensioners are mounted within seconds.
Normal supports as a basis for installation for chain drives, e.g. plates, struts, flanges, thread holes, … are no longer necessary.
They are pre-tensioned manually in the shape of an ellipse without requiring any tool, positioned between the chain strands and released. That makes them highly functional without requiring any tool and without any alignment or adjustment.