Specifications: Maximum torque: 2800N.M Impact frequency:0-8000 rpm No-load speed: 0-8500 ipm Square drive: 1/2 Standard screw: M12-M30 (1/2 "-1-1/4") High strength screw: M10-M24 (3/8 "-1") Square propeller: 12.7 mm1/2" Gear: Forward 3 gears, reverse 2 gears Specificities: With LED work light Battery: 588VF Battery capacity: 22900mah/Pcs Features: -2800N.M high torque, stepless variable speed switch. -Strong electric lock, multi-use, super strong. -Tungsten steel rod, high hardness and wear resistance. -Suitable for on-site construction, maintenance, carpentry, etc. off the shelf. -With LED work light. Adapted to 18V Makita battery -Not Compitable for DC18WA BL1813G BL1413G Battery . -Suitable BL1830 BL1850 BL1840 BL1840B BL1850B. Battery Capacity Suggestion: 2.0AH - 5.0AH compatible for 18V B series lithium battery,such as BL1850B(197285-8),BL1840B(197270-1),BL1830B(197602-2),BL1430B(197618-7),BL1820B(197487-6); compatible for BL1850,BL1840,BL1440(196391-6),BL1415(194560-3),BL1815N(196781-3); NOT compatible for G Series battery such as BL1813G(196663-9) BL1413G(196882-7) BL1415G BL1430G BL1815G and so on NOT compatible for 18v Ni-CD battery such as 1822(194465-7) Package Included: No Battery : 1 x Electric Wrench(NO battery and NO charger) 1 x Box