Package Includes 3pcs resin moulds(3pcs earring mould) 20psc earring hooks 40pcs jump rings in gold and sliver colours 30pcs earring backs 10pcs earring cards and self-sealing bags. Easy to Release after your project is fully cured, just twist the mould, the piece can be easily push out. Material silicone moulds for epoxy resin are made of silicone material, with high flexibility and tear resistance, durable and reusable. great for making necklace, pendant, key chains, auto parts and so on. Multiple Purpose This re-usable silicone moulds set is a good choice for you to share your handicraft with your friends and family, enjoy your happy times together.