An integral part of the "Quad-Seal" camera controls, this Gland has a 1/2" thread and fits into a 1/4" shaft on an underwater housing. You can thread it directly into a tapped hole with a 3/8"-24 diameter, or insert it into a 3/8" through hole using the optional #0219.2 Hex Nut. Additionally, the gland allows for rotation. It is supplied with camera housings that have the appropriate wall thickness, and is offered here as a spare or replacement part. The gland includes an O-ring that provides a watertight seal.