Battery Holder 2PCS Black Cylindrical 3x1.5V Battery Storage Adapter for Case Box storage box aa Features: Suitable for 3 For Flashlight Torch.Connect three batteries together in Series and output 4.5V voltage.The metal column in the positive can be bounced to most fit the device.Battery frame has good heat resistance.Spring is in good resistance and long service life.Specifications:voltag: 4.5V ABS Plastic+MetalSize: 52.3x21.7mm/2.06x0.85inchesPackage Includes:1 Pair Battery HolderNote:Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item.