Feature:1. Strong Universality: V mount battery base, strong universality, compatible with all V mount batteries, thus providing your camera with longer power needs.2. Safety Button Design: With safety button, can effectively prevent the battery from falling off during use. The V mount battery pinch plate can be used to fix the V mount battery on the lamp holder or desktop, which can power for photographic equipment.3. Strong Compatibility: Reserve 1/4 inch screw holes, 3/8 inch screw holes, M4 screw holes, and for Arri positioning holes, which are compatible with various scenarios and facilitate mounting V mount batteries to your device.4. Manufacturing Material: Made of high quality aluminum alloy, sturdy and durable, corrosion resistance, wear resistance, not easy to rust, long service life.5. CNC Hollow Design: Hollow design, weight reduction, CNC process, anodized processing, buckle plate size is 10.6 x 7.3cm / 4.2 x 2.9in, lightweight and portable.Specification:Item Type: V Mount Battery BaseWeight: Approx.139g / 4.9ozMaterial: Aluminum AlloyInterface: V Mount, 1/4 Inch Screw Hole, 3/8 Inch Screw Hole, M4 Screw Hole, for Arri Positioning HoleApplicable Battery: V Mount BatteryBuckle Plate Size: Approx.10.6 x 7.3cm / 4.2 x 2.9in.Package List:1 x V Mount Battery Base1 x Wrench Note:Please allow 01 inch error due to manual measurement. Thanks for your understanding.