The SmallRig support base for portable power banks is made of aluminum alloy to be lightweight yet strong. Its design allows you to mount portable power banks (USB batteries) on the camera, so you can power it for extended periods. It features multiple 1/4"-20 threaded mounting holes, so you can place it where it works best for you. The clamping jaws are lined with rubber pads that protect the finish of your power bank. The entire base weighs just 105 g.