The ingco ciwli120ib5 cordless impact wrench is a 20v lithium-ion powered tool designed for tightening and loosening heavy-duty nuts and bolts. specifications - brand: ingco -model: ciwli120ib5 -power: 20v (lithium-ion battery) -square drive: 1⁄2′′ -no-load speed: 0–2200 rpm -impact rate: 0–3000 bpm -max torque: 300 nm -battery pack: 2 × 20v (2.0ah each) - charger: included (fast charging) -accessories: 3 impact sockets (17 mm, 19 mm, 21 mm) -led light: built-in for working in dark areas carrying case: heavy-duty plastic case for storage and portability