Dobro / Guitar string dampener

This is a string dampener / muter, intended to clip onto the strings between the tailpiece and the bridge (on a squareneck resonator / dobro). This prevents the dissonant ringing of those stretches of strings when you're chopping (and just in general, but I only notice when I'm muting and chopping).

This works with standard dobro string spacing at the bridge, and a Beard style tailpiece. My digital calipers read 2 15/64" or 56.66mm from the outside edges of the log G and high D strings.

It