Sold by 昆明宇胜图电子商务有限公司 is FAKE!! Please look for our store name LEDHALORINGS[Note*] - Please check out all details on item description, make sure these are rings make in 17.5" for cars with 15.5" brake rotors (But our rings can be adjusted from 12.5" - 17.5" by the professional workers or by yourself) . Description: Wheel Ring Diameter: 17.5 for 15.5" Rotors Mounts to Brake Rotor Dust Shield Operating Voltage: 12V DC Waterproof： IP68 Package Includes: * x4 -Illuminated LED Rings * x12 - Aluminium Mounting Brackets (3 Per Ring) * Hardware - Bolts, Nuts, Washers, and Screws * Installation Instructions * 5.0 meter wire for 4rings (with bluetooth controller) Please Connect the Positive to the ACC directly, and connect the negative to the Ground wire, Don't need any fuse. if you use the improper fuse may cause problems ! Instructions of Using the App--Bluetooth App Control (BLEDIM) * There're two QR Codes stick on the products controller box, scan the QR Code to download the app. * If you have problems by scan the QR code to download, please download the app directly on Google lay Store for An driod phone (Over An driod 4.3), i Phone can download directly on App Store. (App named " BLEDIM" ) * Must be sure open the Bluetooth on your phone and with power on of the lights first, and search the signal and connect, then you can use app control the lights After service (one year warranty) . Please contact us in 7 days if there's any problems about the lights, and show clear pictures and video about the problem . If we have confirm it's the products's problem (not human-destroyed), then we can resend you the lights on your next order for free, or pay extra US$20-US$40 shipping fee if you badly need it and send out separately.