Transformers fans, get ready to build your own Optimus Prime with this 813-piece custom building blocks set! This set includes self-locking ABS bricks and is perfect for boys aged 6-12 years old. The set comes in a polybag and does not include any battery-operated pieces. With this set, you can recreate your favourite robot character from the Transformers franchise and explore your creativity. The blocks are made in mainland China and are part of the BuildMoc brand. Please note that the set does not come with any high-concerned chemicals and is suitable for children aged 1 and above. Choose this set for an exciting building experience!