Now built in aluminum the newly redesigned Ruby13 Neck unit is stronger than ever. It works with any of our body styles and heads. The new design was updated in Sept 1 of 2016 to create a more secure fit between the Ruby13 heads and the Ruby13 bodies. With the included black ball cover, this neck unit can replace the older neck unit. *This neck unit is a special order item and can take 8-12 weeks for delivery.