I have several of these holders from different manufacturers and they are all very similar. The edges are not smoothed, only cut. The included screws and anchors are basic - I'd swap them out for snap-on bolts if you're mounting this to drywall (not studs) and holding something heavy like tools. I decided to take a chance and see if the 3M tape would fit. would work on painted drywall if only I had umbrellas to hand (golf and beach). So far it's working, which is impressive.