The diameter should be measured. If it is 4.5cm, please don't choose it. Please make sure your vacuum cleaner motor head is triangular, original roller brush is 3 pin and diameter is 5cm. RollerBrushroll for Dyson V10 (3-prong drive, diameter: 5cm) (not compatible with Dyson V10 Absolute and Dyson V10 Animal, Dyson Absolute and Dyson Animal). The brushrolls are easy to remove and replace . To maintain your vacuum cleaner, it is recommended to replace the brush roll every 2 to 3 months. A new brush roll effectively removes more dirt, dust, debris and pet hair. Provide a clean and healthy environment for you and your family. Brush Roll Made of high quality materials, practical, durable and resistant. Nice accessory to improve the performance of your vacuum cleaner. The clean, quiet rolling brush greatly reduces the suction noise, leaving a quiet space for your family. Customer satisfaction is our first concern: If this product is delivered damaged, please first file a complaint with the