Review on Enhance Fastening Efficiency with YouU Plastic Hinged Screw Washer by Michael Nard

The design is excellent but the materials are not very good. I mean the plastic is too thin. When it comes time to fold the top down to cover the screw head, there's little to no tactile sensation that it snaps into place. Most of them don't go in on the first try and about 20% fall out after a month or so so I had to tape them shut. The thin plastic shows up again in the top being separated from the bottom because the hinge is too thin. About 5% (best estimate) was split in the package upon receipt. I liked the color, the slight transparency and the finished look. It went well with the eggshell color of the cover. It was around 100 pairs if I remember correctly, enough to complete most one off projects I think.