Close, but not identical to the German WW2 "Ersatz" suspenders. With little work, these might just do the job. Used.
These are made in Czech Republic after the WW2, and copied quite closely from the Germans. Hooks for the belt, and clips for a combat backpack. The system is like the German wartime equivalent, but with reversed metal loops and hooks; the Czech model has the hooks in the suspenders, and loops in the backpack. If these are replaced, these suspenders are an easy and quite affordable alternative to leather Y-straps. On top of this, these ARE real deal militaria, and will probably hold up to use pretty well.
Used but serviceable, albeit a bit rough.