SmallRig V Mount Battery Plate with Dual 15mm Rod Clamp 3016 1. The plate utilizing a standard V mount fits most V mount batteries to provide greater battery life for your camera rig with your battery's power port(s). 2. Two stoppers prevent the battery from twisting when attached. 3. It comes with a dual 15mm rod clamp to help mount the plate to your 15mm LWS rod system in a variety of different installation ways. 4. The Plate itself features multiple 1/4-20" countersinks, M3 countersinks, M4 countersinks, 1/4-20" thread holes, M4 thread holes, and an ARRI 3/8" -16 thread hole to attach a dual rod clamp, a magic arm, or other accessories. 5. It's compatible with the Blackmagic URSA mini.