Just need the guts and not the skull? Then, this is the kit you need. This kit includes the hardware necessary to mount the servo, attach it to the jaw, attach to jaw to the skull, and our new servo mount allows an ST-300 or ST400 board to be attached to it.
The kit does not provide the tools or bits needed to drill the holes in the skull to mount the components of this kit.
ST-400 must be purchased separately.