I purchased my detailing vacuum years ago when I owned a roadster and wanted to keep it clean all the time. It only came with 2 extra bags, and when those were gone, I searched car parts stores and websites to find replacements.I was thrilled when I found them on Amazon, and I have theme earmarked for when I need replacements. The pop in super easy, and these bags are cheap enough that I can toss and old one and replace it with one of these.