High powered; 5mm (3/16″) Stroke Finish; Super lightweight (1.5lbs.); Sealed Bearings for Extended Life; Compact for minimum operator fatigue; Orbital action assures final swirl-free finish; Built-in speed regulator; Compact and lightweight motor for long term operation; Composite lever housing and rotors; Special design reduces sound level; Low vibration; Unit comes with Astro #4608 – 6″ PSA Backing Pad