Grounding Clamp with Copper Lug, 1/2″ to 1″, Bronze
https://dev.nsiindustries.com/product/grounding-clamp-with-copper-lug-1-2-to-1-bronze/
The Bridgeport Mighty-Bond 1/2″ to 1″ Bronze Grounding Clamp with Copper Lug is designed for the grounding and bonding of electrical and plumbing systems attaching 1/2″ to 1″ rigid or EMT conduit raceways and steel or copper water piping systems.