It is a QR assembly kit applicable for attaching V mount battery to a camera cage /shoulder mount rig via 15mm rod support system, the V lock mount features quick release lock lever and plenty of mounting points / grooves to expanding functions of accessory attachment. The 15mm Dual Rod Clamp features a 360deg. swivel rod adapter that allows you to adjust the rod clamp at desired position and lock it in place via the central knob. The V-Lock features M3 holes can be used as a replacement of the original V-lock which comes with the V-mount battery.