Manfrotto Magic arm. Knob easily tightens and loosens. It has two articulating 5/8″ ( 16mm ) baby pin mounts on each end, one having a 1/4″ thread, and the other having a 3/8″ thread.

Specs:

• Arm length: 7.5″ (19cm)
• Overall length: 17 ” (43cm)