Variable speed control with soft starting motor features full time electronic feedback that maintains motor speed through the cut. Dual LED's and clear sub base ensure maximum visibility, adjustment ring enables controlled bit depth changes, large, low-pressure spindle lock button, multiple shaft lock detents, depth ring, clamping mechanism and spring loaded release tabs. Specs: 7.0 amps, 16,000-27,000 RPM no load speed, 1/4" collet diameter, 1.5" plunge stroke, 4" base dimension, 12 position spindle lock, weighs 4.1 lbs. Includes: motor, standard base, wrench and instruction manual.Plunge base incorporates fine-tune adjustment rod for precise depth setting.