Jlevel FA021A-51XX (FA20-16/1WEK, FA02--25/1WEK) manual operation trigger switch with 5E4 7.2-24V DC 16 Amper, compatible with some screwdrivers: DWT ABS-12 ВLI-2 BMC, TCD-12 QC Li and other with Li-Ion batteries, with a short (~11 mm) reverse lever, button size ~15(17) * 27(31) mm, body size is ~18*39*27 mm