Stem by Kichler in Textured Black from the Accessory collection.

Fixture Mounting Stems - 12in. (1/2 NPSM thd. Stems, 3/4 dia. overall). All stems made of corrosion resistant aluminum alloy (except BR and BBR) with baked thermoset powder coating to match fixtures. Used with: In-ground support stakes (low voltage only) and Surface mounting flange (low or line voltage)