Compatibility and Functionality: This adapter is designed to convert battery to a 2.1 DC power output, making it an ideal solution for DIY projects that require a reliable power source Premium Material: Constructed from quality pp and brass, this adapter ensures durability and long service life, providing you with a dependable tool for various applications Compact Design: With dimensions of 87mm by 59mm, the adapter is compact and easy to handle, allowing for convenient storage and portability without taking up much space in your toolkit Package Contents: The package includes 1 piece of the Battery Adapter, ensuring you have everything you need right out of the box Versatile Use: Suitable for hobbyists and professionals alike, this adapter expands the utility of your battery by enabling them to power devices with a 2.1 DC input requirement efficiently Specification: Material: PP Size Chart: LxWxH: 8.7cmx5.9cmx2.2cm/3.43inchx2.32inchx0.87inch Cable Length:1m/39.37inch/3.28ft Package Includes: 1Battery Adapter Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.