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, 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 interim “screen and recoat” and fine finish sanding jobs.