Constant Electronic and speed preselection,Sanding plate brake prevents damage (e.g. scoring) on workpiece,Random orbit motion plus rotation ensure the finest sanding with high sanding performance,Velcro-type fastening for rapid, convenient sanding sheet changes,Measured values determined according to EN 60745,Uncertainty K : 1.5 m/s,Electronic:Speed preselection for adjusting to suit any application,Dust extraction: Directly into the integral dust bag on the machine and/or using an all-purpose dust extractor,Constant Electronic: Power booster for heavy loads. Constant speed, even under load,Bosch Micro-filter system: perfect, efficient dust extraction,Speed preselection for work suited to the material.