This is the Wltoys 12428 Upgrade Metal 62T Reduction gear, The Kit number is 12428-0015.
These Parts are used for the Wltoys 12428 RC Car Buggy, cross country Wl toys 12428 1/12 High-Speed Racing Car
If you want to buy more parts for this 12428 RC Car,
Please click the link below:
Wltoys 12428 Parts
Now, The Wltoys factory has produced 4 Series for the 12428 Car, which is the 12428, 12428-A,12428-B, and 12428-C.
The internal structure of these 4 products is roughly the same. These 4 cars' outer Body shell is different, and also only little inner parts are different.
So when you choose the parts accessories, like Tires, batteries, remote control, receiving board, hexagon nuts, screws, etc. can all be used in common.
Some special parts you can according to your Car Number to choose parts.
Wltoys 12428-A Parts for The Wltoys 12428-A RC Car
Wltoys 12428-B Parts for The Wltoys 12428-B RC Car
Wltoys 12428-C Parts for The Wltoys 12428-C RC Car