SBE 660Variospeed (V) electronics for variable speed change, thumbwheel for preselection of speed, aluminium die cast gearbox housing for optimum heat dissipation and long life, optimal cooling by
axial/radial fan, two-speed gear unit, powerful impact mechanism, robust Metabo Marathon motor for extra long service life, Metabo S-automatic torque limiting clutch: to limit sudden reverse torque
which can occur if the bit jams or catches in the material.