Dewalt dcf880 xr compact impact wrenches 18v dewalt dcf880n xj this 18v compact impact wrench from dewalt features xr 40ah li ion battery technology and has been designed with an ultra compact lightweight design for use in confined spaces whilst the intelligent trigger allows total control over all applications all metal gearing ensures efficient power transmission while the aluminium front housing provides greater heat dispersion increasing motor life the wrenchs improved ergonomic