15.0 Amp motor uses state of the art circuitry for soft starts and smooth operation. Full wave electronic variable speed motor runs at 8,000-22,000 rpm with constant speed under load to ensure a quality finish in all materials. Rack and pinion depth adjuster, magnified scale and micro-fine bit depth adjuster provides fast and accurate depth settings. Phosphorous bronze bushings provides a smooth and accurate plunge. Spindle lock button allows one-wrench bit changes. Dust extraction adapter for cleaner work sites. Guide Bushing adapter plate accepts standard guide bushings for template work. One piece motor shaft and spindle ensures perpendicularity and accuracy. Micro-fine depth adjustment.