TFX 19 Tooth Crown Gears

TFX 19T Crown Gears are designed to mesh with TFX 11T pinion gears. They can be modified an Aurora Tjet/AFX chassis or similar but will not mesh with their 9T pinion as well as it does with the the TFX 11T.  Multi-Packs consists of one each of the following colors: Red, Orange, Yellow, Teal, Blue, Purple, White, Silver, Gold and Black.