This powerful (7.9 AMP) and lightweight (only 4.6 lbs.) wet polishing machine has a soft-start feature for smooth operation. Included is a housing cover that protects the die cast aluminum gear housing. It has 3 holes at the spindle top for evenly spreading water to the pad and also prevents the pad from clogging. The overload switch protects the armature in case of failure. Also included is a ground fault circuit interrupter (GFCI) plug. The dial can be pre-set at 2,000-4,000 RPM for optimum rotation speed.