The right tool for the job. The ETS 150/3 has a short 1/8" stroke for fine finish work. The ETS 150/5 has a 3/16" stroke for intermediate sanding and fast stock removal. Both versions are balanced for their specific stroke, for smooth, low-vibration working. - Optimum dust extraction through patented Jetstream principle (air flowing out through an additional hole in the center of the sanding pad) - Turbo dust extraction - Sanding pad brake prevents scratches when placed on or removed from the workpiece - Stepless electronic control for various uses - StickFix (H&L) system for fast abrasives changing - Encapsulated bearing for long service life - Very smooth running through VS balancing - Dust extraction port - Plug it detachable power cord Specifications: Power consumption: 310 Watts / 2.6 amps 120 v AC Pad diameter: 6" (150 mm) Speed: 6000 - 10500 orbits per minute Sanding stroke: 3/16" (5 mm) Dust extractor connection: 1 1/16" (27 mm) Weight: 4 lbs. (1.85 kg) Festool