Ideal for replacements. These black rubber pin backings are new and have never been used. They are sold in groups of 50, and a discount is offered for buying more than one set at a time. I would be happy to provide any additional details you may need upon request. Please look over the photos carefully before you buy them, as I unfortunately can not accept any returns at my current address. You can also find more similar items in my eBay store category: Art & Craft Supplies