This V-Mount Battery Clamp from Westcott can be secured to light stands, tripod legs, boom arms, or other supports by offering a clamping range of 1 to 2". It allows you to safely attach an optional V-mount battery to power your light, monitor, and other compatible devices. The clamp can accommodate batteries up to 4.4 lb and has a durable construction from aluminum, plastic, and rubber materials. Rubber padding on the clamping jaws prevents scratching of surfaces.