Deep Flex™ Plastic Mould, 77mm Round Bangle Bracelet, 23mm Depth, 64mm inside diameter. Deep Flex™ Plastic Moulds are heavy-duty flexible plastic moulds for use with Resin, Polymer Clay, Air dry Clay and all of the Metal Clays - Silver Clay, Copper Clay, Bronze Clay and more. These reusable moulds are versatile and can be used to embed seed beads, watch parts, found items and more in resin, as well as to hold and form clay materials while you add embellishments. Create endless bracelet designs with this popular bangle bracelet mould.