Features: 1Superior Dustproof Performance: Superior dustproof performance our high efficiency replacement parts are manufactured under strict quality control allowing your sweeper to operate at high performance. 2Manufacturing Material: The double sweep brush is made of high strength bristle material to get more dust. The main brush is made of high quality rubber and dense bristle to effectively and thoroughly remove dust and stains from the floor. 3High Efficiency Particulate Air Filter: Effectively catch micro particles. Durable plastic filter box filter box can be reused and cleaned. We recommend that you reuse filter boxes to reduce plastic waste and protect our planet. 4Wide Range of Application: With wide range of application high compatibility perfectly suitable for Proscenic 850T cleaning robot. 5Easy to Use: Easy to use and fine workmanship. Without any difficult requirements even though you use it for the first time. Specification: Item Type:Robotic Vacuum Cleaner PartsWeight: Approx.189g / 6.7ozMaterial: ABS + HighEfficiencyParticulateAirFilter + BristleApplicability: Suitable For Proscenic 850T Sweeping Robot Package List: 4 x Side Brush3 x Rag3 x Filter Mesh1 x Brush1 x Blue Flat Part