Even Though listed "Pre-Owned" these sets are never fielded. Item will have imperfections as they are custom made and each set is handled/made individually. That's why they are listed as "Pre Owned".
Custom Proflex Hardware. The face of these screw back plugs are made of a hard molded plastic not 3D printed and the screw backs are all metal. These are custom made for Proflexes mainly but can fit other paintball masks that have holes like proflexes.
Each bundle comes with 3 sets as shown. Mask not included. What you see is what you get.