[Compatible for Ein18V Battery]Perfect for Ein System Battery -Change Battery. [For 12v flat push model rofessional Tools]Compatible with for 12v flat push model Professional System Tool, long direction interface, drill, cordless drill, impact wrench, cordless screwdriver, for LED lights lamp, work lamp, fan, flashlight . [Easy to install]Easy to install, easy to lock the battery, , safe and stable to use, DIY is fun. The products are only used for flexible conversion between one tool and another lithium battery, and do not involve any other ! The products are only converter, not charger, not battery, not machine, also can not recharge battery by it. note:Please remember to remove the battery if you are not using it. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: Black Material: plastic Package Contents: 1 x adapter(battery not include) 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.