Avenger F830 Baby to Junior Swivel PinAvenger F830 Baby to Junior Swivel Pin Adds articulation to your stand or boom. One end slips onto a male 5 8" pin while the other supports a light or accessory with a 5 8" receiver. The ball joint allows 180 swivel of the fixture, while the large handle provides secure locking in the chosen position. The barrel at the receiver end measures 1 1 8". Removing the tightening knob from it allows you to drop it into a 1 1 8" receiver. Zinc Plated Steel