KRE-O Transformers Bumblebee Construction Set (31144) Build your favorite Transformers hero, Bumblebee, in vehicle or robot mode with this 2-in-1 set of 75 KRE-O construction pieces 2-in-1 KRE-O construction set lets you build Bumblebee as a robot figure or as a sports car Set includes 75 KRE-O pieces Ages 6 to 12