but if you're hoping to use an orbital sanding plate. FORGET IT. The ROS (Random Orbital Sander) base is what I basically bought it for, and the fact that an angle grinder was also made (plus all the reviews) made it an easy choice. HARDLY. I built a kids table and chairs a few weekends ago and wanted a random orbital sander to level the tabletop and prepare it for painting. When I got this I was happy to use the ROS base at all. That excitement passed pretty quickly. As soon as I turned it on, it vibrated so much I thought it was broken. I checked and didn't see any signs so I used it for a few minutes. After 1 minute I had to stop because my arm felt really uncomfortable. So I fitted a corner base as a test and it was day and night. This base felt great and I felt almost no vibrations. Then I realized that the reason for this was the 4 vibration-damping mounts on the corners of this base, which the orbital base didn't have. Seems to be a big oversight by B&D. Anyway, I wanted to make sure it wasn't me, so I tried an orbital base to smooth the surface of the table. I should have just stopped and boxed. My hands felt the vibration long after the grinder was off. And my wrists hurt a little. I don't know how anyone would want to use this for an orbital sander. I'm surprised no one else has mentioned the vibration issue with the orbital base. This is returned and replaced by the dedicated ROS. If I need a corner/detail sander, I just get a hand sander for that. I only gave it 2 stars because it would probably work as a corner/detail sander. I didn't grind anything but the vibration was definitely less when it was attached. ROS is. Well, only POS.