The Oil Collection Felt Pads for Diffuse Necklace/Bracelet Thick, 18mm Assortment of white and black felt pads for your diffuser necklace. Measures 18 mm or 3/4 inch in diameter. Package contains 25 absorbent felt pads for your essential oils. These extra thick and absorbent pads are perfect for your stainless steel jewelry You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!