IO Equipped Locking Swivel from Triad Orbit The IO Lock IO Equipped Locking Swivel from Triad Orbit is a rigid locking joint that utilizes a Hirth joint connection to provide superior hold for your setups. The IO-LCK can be used to provide support for loads that can be excessive for balls joints such as monitors, TVs, or speakers. This awesome locking swivel also has a 360-degree rotational IO receiver that lets you obtain those ultra-precise positionings that can mean the world of difference in your setups. The IO-LCK is a trusted locking swivel here at GearNuts as are all Triad Orbit products.Triad Orbit IO Lock IO Equipped Locking Swivel Features: Rigid locking joint that utilizes a Hirth joint connection to provide superior hold for your setups Can be used to provide support for loads that can be excessive for balls joints such as monitors, TVs, or speakers Has a 360-degree