Restore suction power for cleaner cleaning: A deformed or loose old bracket prevents the roller brush from fitting closely to the floor, leaving dust and hair uncleaned; after replacing the bracket, the roller brush fits the floor properly, restoring suction performance to its original level. Reduce hair tangling and less frequent cleaning: A worn bracket can cause the roller brush to misalign, making hair and threads more likely to get stuck; after replacing the bracket, the roller brush runs smoothly, significantly reducing hair tangling. Protect the motor and extend vacuum life: A stuck or wobbly roller brush increases motor load, and prolonged use can easily burn out the motor; replacing the bracket allows the roller brush to rotate smoothly, reducing the motor's burden and extending the overall lifespan of the vacuum. Reduce noise for quieter use: A loose or worn bracket causes the roller brush to wobble and rub, generating abnormal noise and increasing sound; the replaced bracket fits firmly, allowing smoother and quieter operation. Compatible For Ecovacs， T90 pro x12 pro