The RAM-215U is a photo lighting system post that has a .63 inch hex post and one 1.5 inch diameter rubber ball with plastic twist knob. The ball can connect to any RAM C sized socket accessory.
RAM-215U shown above.
RAM-215U Features:
Warranty: Manufacturer's, RAM Mounts (National Products Inc.), Limited Life Time Warranty.
Material: Black powder coated marine grade aluminum.
Ball Size: One 1.5 inch diameter rubber C sized ball.
Post Size: 5/8" (.63") Hex Post size.
Description: The RAM-215U connects to any RAM 1.5 inch C ball sized socket accessory.