Compact design with foldable frame that can be also separated in two pieces for transportation and storage.Dust-proof planetary drive with low-friction rubber seal protects internal components from dust and moisture, which reduces maintenance and increases service life.Forced planetary, Variable speed machine.Three 7-inch grinding heads, and 3x7-inch Foam plates with velcro included.Floating skirt with flexible brush for better dust containment.Simple control panel. Work hours counter on the 115 V model.You can add up to two 18.5lbs / 8kg horseshoe-style weights - #L21.50.00.00Pair with the V20E Dust Extractor