Intersystem Bonding Bridge, 1/2″, Brass for Bonding Terminations
https://dev.nsiindustries.com/product/intersystem-bonding-bridge-1-2-brass-for-bonding-terminations/
Use the patented Mighty-Bond 1/2-Inch Brass Intersystem Bonding Bridge with 14 AWG solid to 4 AWG stranded wire inside or outside an enclosure or panelboard in conjunction with rigid or EMT conduits with 3-equipment bonding terminations.