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. Two-for-one offer,includes one black turbo keychain and one wrench keychain.. 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..