Complete Maintenance Kit: your M40S or OV31CN robot vacuum cleaner operates at with our comprehensive replacement kit. Anti-tangling and hair-cutting roller brush: Designed to tackle different surfaces, the Tricut brush efficiently removes dirt and debris, enhancing the cleaning power of your robot vacuum. Strong suction and sweeping of fine dust, hair, debris and other daily ground garbage. With the anti cleaning design, it is clean, less maintenance and more worry free. The main brush body is light, effectively reducing the burden of the sweeping robot, reducing power consumption, protecting the life of the sweeping robot motor and battery, and prolonging the service life of the sweeping robot Helps clean the vacuum cleaner and makes your lifestyle healthier Compatible Models: Compatible For M40S / OV31CN Specification:A Color: As Shown Material: plastic Package Contents: 1 x Main Brush 1 x Main Brush Cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.