10.0 Amp AC/DC 11,000 rpm motor designed for faster material removal and higher overload protection Dust Ejection System provides durability by ejecting dust and debris particles that enter the tool through the air intake vents Jam-pot, low profile gear case provides precise gear alignment for a smoother, quieter transmission while allowing access to tight spaces One piece brush arm prevents brush hang-up due to dust ingress Quick-change wheel release provides tool free wheel removal Keyless adjustable guard provides tool free guard adjustment thus increasing productivity Vibration reducing removable side handle provides user comfort and reduces user felt vibration Auto-off brushes shut the tool down when the brushes need replacing to avoid tool damage Oversized, protected spindle lock button provides easier and quicker wheel changes Lock-on slide switch provides the user comfort in extended use applications Matching wheel flanges allow the use of common accessories