High Quality Roller Brush Assembly Designed To Fit Dyson DC24 Ball Uprights. Compare To Dyson Part # 917390-02, 917390-01. 2 Dyson DC24 Roller End Caps. Designed & Engineered By Crucial Vacuum. This is a generic product designed and engineered in the United States by Crucial Vacuum. This is not a Dyson® OEM product and is not covered under any Dyson® manufacturer's warranty. Please check your manufacturer's warranty with regard to the use of non-OEM parts. The Dyson® brand names and logos are the registered trademarks of their respective owners. Any use of the Dyson® brand name or model designation for this product is made solely for purposes of demonstrating compatibility.