This is a replacement 10mm Diff Outdrive, These go into the Rear Differential, and send the drive from the Diff, to the Driveshafts, and onto the Wheels.
These are the larger 10mm ones, and an Improverment over the older 8mm outdrives, they can be used on most of the Baja Buggy & Truck Platforms, provided they have the larger drivehsafts, the older one's are too small.
