Replacing the vacuum cleaner roller brush restores suction power to its original state, eliminating the need for frequent manual combing and cleaning. Replacing the main brush head of the robot vacuum allows it to fit the floor more closely, achieving more thorough cleaning in corners and gaps. Replacing the carpet roller brush reduces operating resistance, resulting in lower power consumption and quieter operation. Replacing the vacuum cleaner side brush provides more even cleaning coverage, greatly improving the efficiency of cleaning the entire house. Compatible for Dreame，L10s Ultra L10 Ultra L20 Ultra X30 Ultra X40