Broad model compatibility: Compatible with X9 Pro, X10 Pro Omni Suggested replacement frequency: Maintenance once every 2 weeks. 3-6 months recommended replacement, depending on your usage frequency. Tool-Free Installation: Effortlessly replace parts on your Robot Vacuum with a simple, straightforward process that requires no additional tools, making it an easy-to-use cleaning tool. Side Brush Stockpile: Set includes side brushes, Meeting your at least a 6-month usage requirement. [Easy Installation] The side brushes are perfectly matched and the installation method is the same as the parts, which is easy to install, easy to use. Colour:Black Grey Material:plastic Package Contents: 6 x Side Brush / 12 x Side Brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!