R-TEC Sure-Shade Universal Drive Tension Device - Color Off-White - (Window Coverings, Drapery, Installation, Upholstery)

Don’t even want to know what the high end brand blind manufacturer would charge for this.(see photos) It fit perfectly with existing mounting hardware so now I have extra just in case. It to just a couple of minutes to install, super simple. I have a couple more of these that are the same age and probably deteriorating as well, so now I know where I can get reasonably priced replacements. Color is neutral and about the same as the original as well. Hope I get a few years out of it at least.