Chrome Metal Spinning Turbo Bearing Keychain Key Ring/Chain For Car/Truck/Suv for Audi TT This listing is for one turbo keychain. Item is real metal for a high quality lasting part. Dimension for the turbo: 27mm (1.1") tall x 31.3mm (1.2")wide. Weighs in at 1.2 ounces. Turbo will spin when you blow in the end.