1Strong Universality: Strong universality, compatible with all V mount batteries, thus providing your camera with longer power needs. With safety button, can effectively prevent the battery from falling off during use. 2Power for Photographic Equipment: 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. 3Strong 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. 4Manufacturing Material: Made of high quality aluminum alloy, sturdy and durable, corrosion resistance, wear resistance, not easy to rust, long service life. 5CNC Hollow Design: Hollow design, weight reduction, CNC process, anodized processing, buckle plate size is 7.3 x 5.3cm / 2.9 x 2.1in, lightweight and portable. Item Type:VLockBatteryPlateAdapter Weight: Approx.89g / 3.1oz Material: Aluminum Alloy Interface: V Mount, 1/4 Inch Screw Hole, 3/8 Inch Screw Hole, M4 Screw Hole, For Arri Positioning Hole Applicable Battery: V Mount Battery Buckle Plate Size: Approx.7.3x5.3cm/2.9x2.1in 1 x VBatteryPlate 1 x V Shaped Base 1 x Wrench Please allow 01 inch error due to manual measurement. Thanks for your understanding.