Rubber overmoulded gearcase allows the user to grip the gearcase for greater comfortVariable speed trigger allows the user to control the speed of the unit by adjusting the force applied to the switchLarge variable speed dial allows the user to easly change their speed to suit specific applicationsReplaceable wool ingestion shields prevent wool from being sucked into the unit and blocking the toolNo volt release switch will prevent the unit from starting when plugged in, even if the switch is in the on position. Switch must be consciously reset before power is deliveredRubber overmould back handle gives the user greater comfort during useLarge spindle lock button allows easy changing of the backing padPop off brushes protect the armature from damage at the end of brush life resulting in greater motor life