Specifications Material:Plastic Hign-concerned Chemical:None Vacuum Part Type:BRUSHES Model Number:Fit for Roborock Qrevo Curv Type:Vacuum Cleaner Parts Compatible Model -Roborock Qrevo Curv Before You Buy 1.Before placing an order, be sure to confirm that your device model is the relevant fit model mentioned on this product page, you can check the specific product model number on the nameplate at the bottom of your device. Refunds due to the purchase of the wrong product will incur return shipping costs. 2.What we sell are brand new compatible accessories, not original ones. 3.Package includes all kits show in pictures based on your selected option. 4.The images shown are for reference only due to the light and shooting angle. 2.SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season. 3. If you have not received your shipment within the period, please contact us. We will track the shipment and get back to you as soon as possible with a reply. 4. We seller are not in charge of import duty, buyer is responsible for that. Any dispute caused by this is unreasonable. After-Sales Support 1.Please contact us before leaving any negative feedback or opening any dispute on AliExpress.We will help you to resolve the problem and give you a satisfying solution. 2.All accessories in our store are washable. 3.Our side brushes are made of plastic and silicone, which can easily be squeezed and deformed in transit. Don't worry if this happens, just use hot water to scald the brush and it will be back to normal. It will not affect daily use.