Features: 1Multi Directional Floating Brush: The multi directional floating brush sticks to the ground for effective cleaning even on uneven surfaces and can easily absorb pet hair dust and fine dirt from floors or carpets. 2Premium Silicone: These robot vacuum roller brushes are made of premium silicone materials that are durable and has long service life. 3Easy to install and Replace: This robot vacuum main brush can be easily disassembled and replaced as part of normal maintenance. 4Practical: Frequent replacement of the brush can effectively extend the service life of the machine and effectively reduce dust and pollen sliding into the air. 5Anti Winding: The brush has reverse function foreign body swallowed automatically reverse spit out. And the serrated tread it is not easy to stick to entangled hair. Specification: Item Type: Robot Vacuum Main BrushMaterial: SiliconeGross Weight: 81g/2.9ozApplicable Model: For T9AIVI AIVI+ Package List: 2 xRobot Vacuum Main Brush