1.Flexible application for 18V lithium batteries. 2.It can effectively reduce the weight of tools and make work more convenient. 3.The product itself is and easy to carry. 4.The back of the battery interface is designed with a belt buckle, which can be inserted into the belt during use to improve work efficiency. 5.Compatible battery models:For 18V Li-ion Battery: BL1815 BL1830 BL1840 BL1845 BL1860,etc. For HongSong / / BoDa / / ZhiPu / JiangMi etc. 18V Power Tools Note:This product is not suitable for original (for ) power tools! Color: Black Material: plastic Package Contents: 1 x Lithium Battery Adapter Expansion Cable Only the above package content, other products are not included. Note: Light reflection 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.