Exact copies of WWII liner chinstraps. The hardware is not Belgian or Dutch surplus; it is new reproduction made by Anchor, one of the original W.W. II manufacturers. ATF had it plated in olive drab as was the hardware on early W.W. II helmets. (Black hardware appeared late in the War.) Assembled with Scovil brand fasteners (the cap may say "Scovil" or "DOT" both are Scovil manufacture, so don't stroke out.).