Lego Parts: Technic, Gear 16 Tooth with Clutch - Smooth (PACK of 4 - DBGray)
The Dark Bluish Gray Technic, Gear 16 Tooth with Clutch - Smooth was released in 2009 and has been used in 19 sets to date in the following categories: Educational & Dacta (1) Mindstorms (1) Technic (16) The Lego Movie (1)