American Standard Extension Kit - AMS-M960131

Yes, that's exactly what the M960131 kit is built for. It fits 4 inch center-set faucets with 1/2 inch male inlet shanks, and also top mount faucets with the same 1/2 inch male inlet shanks. If your faucet has female inlets or a different shank size, this isn't the part.

Each extension adds 2-1/4 inches to the faucet shank. That's the number that decides it: measure from the underside of your sink deck to where the supply connection has to land, and if you're short by 2-1/4 inches or less on a thick counter or deck mount, this closes the gap. More than that and you need a different approach.

Two. The kit includes 2 extensions, which covers both inlet shanks on a standard two-handle faucet, so one kit does one faucet. If you're extending a fleet of sinks, order one kit per faucet rather than per connection.

Shank extensions solve the case where the faucet's threaded inlets don't reach far enough below the deck to take the supply connection, usually because of a thick countertop, a deck-mount setup, or a sink rim deeper than the faucet was designed around. The M960131 pieces thread onto 1/2 inch male inlet shanks and push the connection point down 2-1/4 inches so the supply lines land where you can get a wrench on them. It's a kitchen sink application.

Metal, with a brass finish. They sit under the sink where nobody sees them, so the finish is about the material rather than appearance, but it's a metal-bodied part and not plastic.

There's one version, sold with no finish option to choose. Everything ships as the same brass-finish metal piece under part number M960131-0070A. Nothing to specify on the order beyond quantity.

American Standard sells this as M960131, and the orderable number is M960131-0070A. That's the identifier to quote when matching an existing American Standard kitchen faucet install.