3D Miniature Turbo Model Keychain,Perfect Gifts for Car Fans.. Turbine will rotate when air is blown into it using of straw,howerver,it can't make noise or sound.. Style Classic, timeless, elegant design looks great from every angle.. Quality Products are lased with Maycom Brand,meanwhile,they are packaged with gift box with maycom brand printed to distinguish unauthorized products.. It has 5 screws on the back that are not painted over . Also there is a pin with a c-style clip that holds the impeller assemble to the back-plate..