The arms have two nicely machined metal sections. The lower section has a
locking accessory show mount or you can remove the shoe and use it with either
a 1/4x20 female or male thread, so it fits any need.
There is a ball joint on
the base allowing it to swivel in most any direction. The top section also has a
ball joint and a threaded 1/4x20 post. The large knurled knob allows you to
loosen both ball joints, top and bottom, move the arm into whatever position you
desire, and lock everything up with the twist of one knurled knob.
use, yet extremely versatile design. Available in two lengths: 7" and 11"