Great Planes Swivel Ball Link 4-40 1 per pack (BOX 20)

The Bolt-On Swivel Ball Link may be used with Airplanes or Cars.
Features:
The hex shaped shank helps the swivel arm thread on smoothly and hold tightly without additional hardware. The brass swivel allows the control arm to move freely through a wide range of motion.
The socket screws and hex nut are zinc plated and hold tightly in place to provide a strong center pivot. Accept a 4-40 threaded rod.

Includes: One Socket screw (4-40 x 1/2)
One Hex shank/w ball swivel (nylon constructed w/brass ball swivel)
One Standoff (brass)
One Hex nut (4-40)
Requires: 3/32" hex wrench to tighten screw (GPMR8002)."