Maycom Spinning Turbo Keychain Keyring Turbocharger Turbine Key Chain Ring Keyrings (Polished Silver) Packaged with OPP Bag Keychain dimensions are approximately 1.75 x 1.25 inches USE OF STRAW OR CANNED/COMPRESSED AIR RECOMMENDED TO SPIN TURBINE Assembled in 3 Primary Parts Similar to a Real Full Size Turbo