9686-1 (Inv) Simple and Motorized Mechanisms Base Set (Simple & Powered Machines Set) 388 Parts, 2 Minifigures, 1 Book, 5 Gear, 2009 Sets: Educational & Dacta: Technic
* Add 4 Part 92402 Black Tire 30.4 x 14 Offset Tread - Band Around Center of Tread (Alternate) (match ID 2)
* Change 4 Part Black 30391 Tire 30.4 x 14 Offset Tread {Regular to Alternate} {match ID 0 to 2}