Wire length 400 +/- 10mmworking principle: Connect this product to compatible the 18V lithium-ion battery, and use two wires to draw out the battery compatible use by other devices of the same voltage, as a helper compatible DIY players, such as small DC fans, heating clothing, electric toy modification, etc...colour: as shownMaterial: plasticPackage Contents:1 x Battery AdapterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it!