This repair kit includes everything needed to repair a Native Trails NativeStone Concrete Sink. Like all sealed concrete products, the sealer on your NativeStone sink will need to be refreshed. Timing varies based on use, but we generally recommend resealing kitchen sinks every 3 years, and bathroom or bar sinks every 5 years. When it is time to reseal, we have our NativeStone Shield available to purchase. If the sealer has been worn down and needs more than just our NativeStone shield (i.e. the concrete darkens when it gets wet), you may need a Repair Kit. Disclaimer: Before purchasing any repair materials, if you are unsure of what finish you have, please review the invoice or receipt you received from your original point of purchase. There will also be a sticker located on the underside of the sink that will provide the item name, finish, and product number. Or, you can contact our Native Trails Customer Service team for assistance with identifying your finish. If you are unsure of which repair materials are needed to restore your NativeStone sink, please do not hesitate to contact our Native Trails Customer Service team. They will be more than happy to help you identify the correct materials that are needed. If the incorrect repair materials or incorrect finish of materials are purchased without consulting with our Native Trails Customer Service team, in no event shall Native Trails be liable for any damages to or caused by the products during or after application. Please note that variations in dimensions, textures, and finishes are inherent in our handcrafted products and are not considered defects. If you have questions or concerns regarding common natural variations, we highly recommend consulting with our Native Trails Customer Service team before purchasing repair materials. Finishes are not covered by our product warranties. Native Trails is not liable for any damages as a result of the actions of the customer.