[Use for Fein 18V Tools] This MT18FIN battery adapter converts 18V lithium batteries to fit FEIN 18V tools, serving as a compatible replacement for FEIN ASCD 18, ASCD 18 W4C, ASCM 18, and fits FEIN B18A.165.01 battery models. It allows you to use existing 18V batteries with FEIN 18V cordless tools, helping avoid the need to purchase additional FEIN-specific batteries. [Compatible with 18V Batteries] The adapter's bottom port is compatible with 18V lithium batteries including BL1860B, BL1860, BL1850B, BL1850, BL1840, BL1830B, BL1830, BL1820, BL1815, and similar models. The top port is designed to work with FEIN ABS 18, ABS 18 C, 18, and tools requiring the B18A.165.01 battery. [Convert for Fein 18V] The adapter's top connector fits FEIN ASCD 18, ASCD 18 W4C, ASCM 18 series tools. It is compatible with devices using FEIN B18A.165.01 (92604164020), B14A.164.01 (92604175020), and models such as ABS 18, ABS 18 C, ASCD 18 W2, ASCD 18 W2C. [Safe Protection] Features a solid design made from high-quality ABS material. Resistant to high temperatures, wear, and drops. Lightweight and easy to carry. Intended for use between battery and tool only. Note: The adapter does not charge batteries. Do not plug the adapter into any charger. Use only the original battery charger to charge batteries. Charging through the adapter is not supported. Color: Orange Material: ABS Package Contents: 1 x Battery Adapter (battery and tool not included) Only the items listed are included. Note: Lighting and display differences may cause slight variations in color between the product image and actual item. Measurement may vary by +/- 1-3 cm.