I'm looking for a variation on your standard zip tie where the tie is a two piece affair. First piece has a flat head like a washer and has the long t ie strip projecting centrally from it. The other part is like a flat washer through which the long tie strip is pushed and which locks the strip.
So if you want to join two items together, you push the long tie though bot h pieces to be joined and then the locking washer. You then pull the strip firmly to squeeze the two pieces together.
Does something like this exist?