Compatible with: for Roborock S7 S7+ T7s T7s Plus Robot Vacuum Cleaner. The accessories are of high quality. They are made from very resistant and environmentally friendly materials. The accessories are easy to remove dirt, dust and litter in corners and edges effectively. Especially your hair and that of your pets. Replacement parts are durable and easy to install, which makes the life of your vacuum cleaner longer. Warranty from the manufacturer: There is a 60-day warranty after delivery. Please buy with confidence.