The ETS 150/3 is a favorite for fine sanding and extra-fine sanding, producing an excellent surface finish with a short 1/8" (3.0 mm) stroke. The ETS 150/5, with a 3/16" (5.0 mm) stroke, is perfect for light sanding or intermediate sanding. Both feature a rubberized top grip, ergonomic handle, finger tip switch and vibration-stop balancing to reduce the discomfort normally associated with sanding. Jetstream dust extraction improves the surface finish by removing dust particles as they are generated, while at the same time, prolonging pad and abrasive life. With soft-start, step-less speed controls, and constant speed under load, these sanders perform on a level that you are not likely to have experienced