Features: 1Comprehensive Kit: Includes a universal wheel, base station sink filter and self cleaning brush to keep your vacuum cleaner in top condition 2Efficient Filtration: Vacuum cleaner water filter can effectively filter the air, capture dust, pollen and other small particles, to provide clean indoor air. 3Easy Maintenance: Clean accessories keep your home robot performing at its best. Accessories are easy to remove and replace as part of routine maintenance. 4Durable Brush: The brush is made of durable materials and detachable. Hair tangled on the brush roller can be removed after cleaning the mop pad. 5Effective Cleaning: Suck the dirty water of the base to the water outlet, and suck the dirty water into the dirty tank, deeply and effectively clean the dust, sauce, grease, hair on the mop. Specification: Item Type: CasterCleaningBrush and WaterFilterApplication: for Roborock S8 Pro UltraWeight: Approx. 100.00g / 3.53oz Package List: 1 x Caster Wheel1 x WaterFilter1 x Self Cleaning Brush2 x Screws