#10 'B' Couplings can be used with the #10 size ball chains to join ends of the chain to form endless assemblies. You can also use the B type ball chain coupling to attach plumbing parts and accessories such as sink stopper and drain plugs.
Coupling Size: #10 chain
Hole Size: .190 inches
Material/Finish: Nickel Plated Brass
THE ONLY TYPE B COUPLING THAT IS MADE IN THE USA