22mm Alloy Essential Oil Diffuser Locket. Snap button will come with additional random color felt pads. Essential Oil goes on the felt pad. Snap Button fits 18/20mm Bracelet/Necklace/Key-chain/Earrings/ PopSocket/ Headband/ Face Mask etc. Brand New. Interchangeable Check out the additional pictures and video to see how Snap buttons work. *This listing is for a Snap Button only* *Essential Oil NOT included*