[Compatibility Replacement] for 12V cordless tools, compatible with for C lithium-ion batteries, can convert for C lithium-ion batteries into for 12V power tool batteries (batteries not included). [Compatible with for 12V tools] This adapter can use the listed lithium batteries for 12V Li-ion cordless power tools, for 12V drill/driver systems, and for 12V cordless screwdriver kits, allowing you to enjoy the advantages of lithium-ion batteries for extended runtime on existing 12V tools. [Material] , and portable, can extend the life of tools. [Easy to DIY operation] Battery DIY converter, make full use of household batteries 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. Due to different production batches, labeling is random and does not accept designation and does not affect use. 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. Color:Black Material:plastic Package Contents: 1 * adapter (battery not included) 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.