These are the side buckles and attachment piece on the side of the armor. 3D printed versions are not strong enough if you hook the ammo pouch to them. These are. Cast as one piece in dense resin. They can be drilled and either riveted or bolted to your armor. They are cast in black so all you need to do is add some silver highlights to the buckles to make them look like metal. Price is for a set of 2.