SmallRig Dual 15mm Rod Battery Hinge MD2802 is designed for mounting the battery on the rig more conveniently. It features a standard dual 15mm rod which can be easily mounted on a railblock or a shoulder pad with dual rod clamp like the VCT-14 Shoulder Plate 2837. It should be used with a battery plate like V Mount Battery Plate 1846 and MD2801 with the battery. The angle of the hinge is adjustable and can be locked at will on your shoulder rig. In addition, there are many 1/4-20 threaded holes on the hinge for mounting other accessories.