Review on Zeelo Adjustable Synchronous Straighten Tensioner by Juston Alonso

when i received the item, the first thing i noticed was that it was different than in the picture. The inner carriage was smaller than the part shown in the attachment. Okay, not a big deal, but then I cranked the pulley and they had so much dirt. I took it apart and measured the inside diameter of the ball bearings pressed into the pulley which was 5mm. I then measured the diameter of the bolt that the bearings should sit on. I measured 3mm. That's a lot more slop than would ever be nice. I did some searching and found a 5mm OD metal brake hose that perfectly matched the bearings. I then had to drill through the line to allow the 3mm bolt to go through, effectively creating a bushing to take up play. I've got a nice tight fit now without hesitation, but the quality of the cast pulley isn't very reassuring. what do you want for 12 bucks