Features: Safely clean and protect your delicate hard floors with this high quality brush roll. The special design of this brush roll effectively removes stubborn dirt and restores the shine to your floors. Designed for both commercial and residential use, this brush roll is perfect for property managers and cleaning service providers. Made from durable ABS material, this back cover effectively collects dust, debris, and fine hair for efficient cleaning. Perfect for households, offices, or any indoor space that requires regular use of a robot vacuum cleaner. Specifications: Material:ABS Size:As Picture Shown Quantity:1pcs/2pcs For X1 X1S T10 T20 Package Includes: 1x Roller Brush or 2x Roller Brush or 1x Roller Brush+Brush Cover note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.