Chansen COS100 12" Benchtop Oscillating Spindle Sander is for smooth curve edges but only needs limited space. It can sand both inside and outside curves of all shapes and size with six included115m height sanding sleeves, dia. from 15 – 78mm. The oscillating movement of the spindle sands workpieces more efficiently. Compare non-oscillation sanders, this sander burns less, removes more, and wears the sandpaper less. Onboard storage design keeps all sanding sleeves, drums, table inserts, and spindle washers well organized and handy. The portable size makes COS100 easy for moving around your job site when you need.