Compatible Models: The hose is designed specifically for the Shark Rotator Professional Lift-Away and Shark Rotator Pro Complete Lift-Away Upright Vacuum Series NV500, NV500C, NV500CO, NV500Q, NV500W, NV500WC, NV500WTV, NV501, NV501GN, NV501PR, NV501C, NV501-31, NV502, NV503, NV504, NV504Q, NV505, NV510, NV510 31, NV520, NV520Q, NV520QR, NV520QPR, NV552, UV560, UV560-31, UV561, UV561, UV561Q. For better compatibility, please check your machine model. BETTER PERFORMANCE THAN ORIGINAL: This product is superior in compatibility. We optimize and improve our product, referring to the original design, and we upgrade the hose material to high-quality PVC and thicken the steel wire to improve toughness. Hence, our replacement parts can protect your vacuum cleaner well and extend its service life. CLEANING IS MORE EFFECTIVE: With material upgrade and design optimization, our products are confident to bring you a better cleaning experience.