AR18M12: The adapter is suitable for GIDRID 18V batteries /for 18v battery to for 12V cordless tools. That said, this adapter matches for GIDRID battery, which drives your 12V tool, which makes your 12V tool work longer.(Adapter only, battery not included.) For 12V Tools: The adapter fits for 12V series tools perfectly. Such as Drill Driver, Screwdriver, LED Work Light, Impact Driver, Reciprocating Saw, etc. Safe and Reliable: Our adapters have a built-in safe reduced voltage design that allows your 18V battery to power 12V tools. And it not damage the battery and tools, safe and reliable, please to use it. Tip: The adapter cannot charge the battery, so please remove the adapter before charging. Remove the adapter when not in use. Adapter only, battery not included. Color: Red Material: plastic Package Contents: 1 x 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.