Use this Offset Accessory Arm with Single Baby Pin for Mag Carts from Backstage Equipment to mount accessories on your cart while keeping the shelf space uncluttered. The arm mounts on a standard 5/8' baby pin and features its own 5/8' baby pin. Once mounted, lock the arm in place, and when moving, you can easily loosen the locking knob to swing the arm over the cart, or remove the arm entirely.