On all my basses I've used sewing thread, fishing line, or a leather shoelace to tighten the button holes on my straps. Just thought I would share as years ago I tried the metal kind and mever liked them; they rattle and you have to take off the original strap buttons. I'll post a pic of my rickenbacker's strap as an example. I drilled two holes and used 30 lb fishing line I had laying around.
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