This Avenger F830RH Baby to Junior Swivel Pin with Ratcheting Handle adds articulation to your stand or boom. One end slips onto a male 5/8 in. pin while the other supports a light or accessory with a 5/8 in. receiver. Removing the stand tightening knob allows you to drop the 1 1/8" end into a Junior receiver. The ball joint allows 180° swivel of the fixture, while the large handle provides secure locking in the chosen position.