Dong Cheng Cordless Impact Wrench 18V/4.0AH DCPB16E Dong Cheng Cordless Impact Wrench featuring a compact & ergonomic design. Powered by 18V lithium battery, 4.0ah capacity, running time up to 35 minutes. Suitable for Car Mechanic, Construction, DIY Enthusiast etc. Specification Battery (v) : 18 Battery Capacity (Ah) : 4.0 No-load Speed (rpm) : 0-2200 Rated Impacting Frequency (…/min) : 0-3200 Max.Fastening Torque (N.m) : 230 Net Weight (kg) : 1.75