This is a 1:6th scale head for custom 1:6th scale figures, like those from Sideshow Collectibles, Hot Toys, ThreeA, and Glitch Net, etc. This is the head only - without a neck, figure, or accessories! It is designed to work with my necks, which connect to 1:6th scale ball-joints in chests.
I designed this Transformers-style head with a skull for a bit of fun. It is similar to my Autoboticus head, but has a skull in it - maybe as a symbol for dead robots, or for when Prime returned from the dead ;)