?Compatible Device? Dust Bags Compatible With Roborock S8+/S8 Pro Ultra /S7 Maxv Ultra / S7 Pro Ultra / Q7+ / Q7 Max+ / Q5+ Self-Empty Dock, Please Kindly Check Your Machine Type Before Order. | | ?Easy To Install?It Is Very Easy To Install The Device With The Handle Piece. The Handle Piece Also Locks The Bag Into Place Really Well So You Do Not Have To Worry About It Coming Loose Or Any Leakage Risk | | ?One Dust Bag For Two Month?The Empty Dock Pulls Dust Into Our 3 L Dust Bag, Suitable For Up To 7 Weeks Of Cleaning Which Can Provides An Extremely Convenient, Totally Hands-Free Cleaning Experience * Actual Emptying Interval Will Depend On User Habits And Environmental Factors. | | ?Durable Replacement Bags? Dust Bags Are Made Of Excellent Pp Material And Precise Non-Woven Fabric That Effectively Blocks Over 99.9% Dust And Other Debris. Perfect Replacement Parts Compatible With Roborock S8 Pro Ultra Bags / S8 Plus Bags / S7 Maxv Ultra Dust Bags/ S7 Pro Ultra .