Hands down, this is the most realistic turbo keychain ever produced.
Upgraded features contain dual twin shield ball bearings, ultra realistic SHF (Super-Hi-Flo) impeller/turbine; semi-clockable housings, center cartridges, and other parts interchangeable within the TK10 family. Both impeller and turbine are interconnected to spin in unison and sounds just like a real turbo when spooling quickly.
Every unit is hand assembled in USA and ships fully tested. Production is initially limited to 5 per day which makes them very exclusive.