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The set 7748 Corporate Alliance Tank Droid is a Star Wars: The Clone Wars set released in August 2009. It includes 216 pieces to assemble a second version of the Corporate Alliance Tank Droid, and four minifigures: two Clone jetpack troopers and two Battle Droids.
The Tank Droid has 56 chain pieces that connect together to make a chain that runs of three dark grey gears. The chain goes from the front of the tank, over the top wheel, and to the back wheel. When the tank is driven along, the chain turns. The back wheel is built of a 4x4 circular dish, with a smaller dark grey 2x2 dish on it. A section with several sloping pieces on it joins onto the back wheel, and runs to the front of the tank. From the middle of this section, is a bar that goes up and connects onto another gear. Two large 10x10 dishes made the outer rim of the front wheel, with a bar going out either side. Two TECHNIC pieces go up from the outer side of the wheel rim and connected onto the eyes. The Tank Droid has yellow eyes with an antenna on the back of each one. On the outer parts of the bars were two other TECHNIC pieces with guns on them. One of them had a stationary gun, and the other a long flick-fire missile.