Chrome Turbo Bearing Keychain Metal Whistle Key Ring/Chain Boosted Spooling P3 for Hummer H1 This listing is for one turbo keychain. Item is real metal for a high quality lasting part. Dimension for the turbo: 28mm (1.1") tall x 47mm (1.85")wide. Weighs in at 1.6 ounces. Turbo will spin when you blow in the end.