SmallRig Universal Power Bank Holder 2790 is designed to attach a power bank to a camera rig, or a mobile phone rig when a sustainable charging solution is required. It will hold power banks with width range from 53mm to 81mm, which covers most power bank products in the market like Anker, RAVPower, POWERADD, etc. It comes with two 1/4 screws, which can be used to attach the holder to the desired place, and the screw tighten design ensures a more secure and stable clamping of the power bank. Inbuilt rubber pads help absorb shocks and prevent your power bank from scratching. It weighs 80g only.