925/10 Silver-filled 6mm Glue on Earring Post
I use these Silver-filled Glue on Earring posts and glue the Swarovski Flat back crystals to make stud earrings. These make beautiful stud earrings.
I purchased 30 of these and had no trouble with the quality. A pair of these posts and two Swarovski SS20 flatbacks make adorable studs.
As for earring backs, I can confirm that the Sterling Silver Earring Back - Medium (product code STG-NUT-MED) DO fit these posts. The 925/10 Silver Filled Earring Back - Light (EAR-0041) DO NOT fit.
The post snapped off when putting an ear nut on it. Not sure if it was just the one that was defective, though, as I didn't want to mess with the others.