The threadless pin is made out of implant grade steel.
The 14g has a standard threadless pin that work with any Neometal 14g threadless post. It has a 5/32" base and a 7/32" length.
The 12g has a standard threadless pin that work with any Neometal 12g threadless post. It has a 3/16" base and a 1/4" length.