Transformers Age of Extinction Construct-Bots Dinobot Riders Optimus Prime & Bumblebee Buildable Figure Bundle Optimus Prime Buildable Figure -Build this 2-in-1 Optimus Prime figure as a robot or semi truck, Convert to the other mode or tear him down and build him again, Changes in 6 steps, Includes 18 pieces and instructions, Figure can ride Dinobots figures (sold separately) Bumblebee Buildable Figure -Build this 2-in-1 Bumblebee figure as a robot or sports car. Includes 18 pieces. Convert to the other mode or tear him down and build him again. Changes in 6 steps