[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 existing 18V batteries with FEIN 18V cordless tools, helping reduce the need for additional FEIN-specific batteries. [Compatible with 18V Battery] Converter bottom port fits 18V lithium batteries including BL1860B, BL1860, BL1850B, BL1850, BL1840, BL1830B, BL1830, BL1820, BL1815, and similar models. Top port compatible with FEIN ABS 18, ABS 18 C, 18, and tools requiring B18A.165.01 battery interface. [Convert for Fein 18V] Top connector compatible with FEIN ASCD 18, ASCD 18 W4C, ASCM 18 series power tools. Designed to work with devices using B18A.165.01 (92604164020), B14A.164.01 (92604175020), ABS 18, ABS 18 C, 18, 18 C, ASCD 18 W2, ASCD 18 W2C, and related 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 connect the adapter to any charger. To charge batteries, always use the manufacturer's charger. 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 color variations between the product image and actual item. Measurement may vary by +/- 1-3 cm.