The dewalt dcf815d2 impact driver has a compact body to enable operation in confined spaces and repetitive use with minimal fatigue and the parabolic switch profile allowing for greater control over speedthis impact driver also features a 635mm lsquodrop inlsquo keyless hex driver allows for quick one handed fitment and 3 led lsquohalolsquo ring provides maximum illumination to work piece complete with the aluminium front housing provides greater heat dispersion increasing motor life