I originally bought 2 of these stoppers for my daughter's leather charm braclet. Unfortunately, they would not slide over the small clasp end. I own a Zable sterling silver braclet w/ a lobster clasp & it has a screw end for bead addition & removal. The stopper beads fit quite tightly on the bracelet so I used them. They work very well & hold an odd shaped bead that doesn't sit well against other beads in perfect place. I would recommend these stopper bead completely. I also highly recommend Queenberry, love their products & quick-shipped, well packaged products.

*My only negative comment is that they would not fit my daughter's bracelet which was the original purpose of the purchase. It resulted in an additional purchase & additional wait time for the item we needed.