This is an alternate head design compatible with 6mm ball-joint connections, based on the Fansproject CrossFire-02A Explorer. It's designed to be compatible with most Transformers Combiner Wars figures, but is intended to replace the head on Combiner Wars Blast-Off.
This version features:
- improved ball socket
- cut slope at the back of the neck to allow for upward neck articulation
- better clearance for chest gap