TruePower Electronic Stepless Speed Controller, Variable AC Motor Rheostat (Brush-type Only)
On/Off/variable rocker switch, dial speed adjustment. Allows you to vary the speed of tools using a brush type universal motor. Will not work on induction, shaded pole, soft/slow start, or brushless type motors. # Line cord: 6 feet, 3 wire double insultated, 18 AWG UL listed # Dim: 4-3/8" L x 2-9/16" W x 2-3/4" H