Mars 1 inch hole:15/16 inch hole This is actually one of

This is actually one of my favorite designs and is made of 3/16" thick 80CRV2

or Thunderstorm Kevlar

It is 3/16 inch thick brass and the same size as a credit card

This product was designed by me after searching for a way to hold a shoulder microphone to my uniform and not finding anything satisfactory

you need to have the magnetic attachment with the buttons shown in the photos (the mount doesn't use the buttons

Mars 1 inch hole:15/16 inch hole This is actually one ofThese are single rings made of half inch thick brass. They happen to have an arrow built into them for pointing conveniently without having to wear out your dainty little fingers.