Plastic box clasps are most often used for making nursing or teething necklaces that are created using special silicone beads made from certified food grade silicone, which is also used, for example, for making baking pans. You can easily hide a knot made on a nylon satin cord into this plastic box clasp and its mechanics is designed in such a way that it really holds very tight after snapping it shut. We offer these clasps in a wide variety of colours so you can easily combine them with silicone beads that we provide not only in a round shape, but also in various other shapes or engraved with alphabet letters. However, you can also string wooden beads with various shapes or letters on the chain as well.