Help From The Community

Does anyone have a source for traditional suspender hardware - particularly the adjusters that brands like Albert Thurston or Brooks Brothers would use for their braces?

I have searched high and low and all I can find are these fairly cheap ratchet adjusters: https://www.etsy.com/ca/listing/227691321/50-sew-on-ratchet-slide-adjusters-1?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=metal+adjuster+clips+garter&ref=sr_gallery-1-7&search_preloaded_img=1&organic_search_click=1