[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 lithium battery models. Use your existing 18V batteries with FEIN 18V cordless tools and reduce the need to purchase additional FEIN ABS series 18V batteries. [Compatible with 18V Battery] Bottom port is compatible with 18V lithium batteries including BL1860B, BL1860, BL1850B, BL1850, BL1840, BL1830B, BL1830, BL1820, BL1815, and similar models. Top port connects to FEIN ABS 18, ABS 18 C, 18, and 18 C tools, as well as devices requiring B18A.165.01 battery compatibility. [Convert for Fein 18V] Top connector fits FEIN ASCD 18, ASCD 18 W4C, ASCM 18 series power tools. Designed for use with FEIN B18A.165.01 (92604164020), B14A.164.01 (92604175020), ABS 18, ABS 18 C, ASCD 18 W2, ASCD 18 W2C, and other compatible lithium-ion battery models. [Safe Protection] Features a solid design made from high-quality ABS material. Resistant to high temperatures, wear, and impact. Lightweight and easy to carry. Intended for direct use with compatible batteries and tools. Note: This adapter does not charge batteries. Do not plug the adapter into any charger. Always use the original battery charger to charge your battery. Color: Orange Material: ABS Package Contents: 1 x Battery Adapter (battery and tool not included) Note: The actual item may vary slightly in color due to lighting or screen display differences. Measurement may vary by +/- 1-3 cm.