The random-orbital sanding action of the OBS-18 and OBS-18DC removes the scratch patterns left by drum or rotary sanders, leaving a smooth, flat floor ready for refinishing. At 3,600 orbits per minute, 1 2 6 3 4 technical data the OBS-18 sands faster than any other orbital sander available. With torque-less operation for enhanced operator comfort, the OBS-18 and OBS-18DC are perfect for 5 Electrical Motor 1.0 hp Universal, totally enclosed, 115V, 60 Hz Sanding Path 18 in (45.7 cm) Power Cord 50 ft (15.3 m) gray, non-marking rubber interim “screen and recoat” and fine finish sanding jobs.