Description: 【Compatibility】: Designed specifically for lithium battery, this double adapter allows you to connect two batteries simultaneously, enhancing the power supply for your electric tools 【Versatile Use】: Ideal for a wide range of electric tools including drills, fans, impact wrenches, saws, and heaters, providing flexibility and convenience in various applications 【Sturdy Material】: Constructed from quality PP, this battery adapter converter ensures durability and long term performance even under frequent use 【Efficient Power Management】: This adapter efficiently manages power distribution between two battery(battery not included) to ensure optimal performance of your tools without interruption 【Easy Installation】: Simple to attach and detach for battery and compatible tools, making it easy for both professionals and DIY enthusiasts   Specification: Material: PP Size Chart: 10.7cmx8.5cmx9.5cm/4.21inchx3.35inchx3.74inch Package Includes: 1x Power Tool Battery Conversion Adapter(Battery Not Included) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.