SmallRig Mini V Mount Battery Plate with Crab-Shaped Clamp 2989 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). It comes with a crab-shaped clamp that fits rod diameter from 15mm to 30mm to help mount a V mount battery to a tripod, a light stand, or a handheld ring for gimbals. The plate itself features two 1/4-20" countersinks, two 1/4-20" thread holes, and four M4 thread holes, which can be used to attach a dual rod clamp, a magic arm, or other accessories, will help mount a V mount battery to your camera rig as needed. The mini shape design makes it lighter and more portable.