Originally I was looking for a heave duty one with a longer cord but the were price so I had to but two smaller ones. I found surge protector are very safe. I have all of my electrical items attach to them. I've also been looking for some with vertical connection(prongs) have not found them yet. Do you have or plane to supply them to your customers not the adapters but a surge protector. A lot of new equipment has prongs for the vertical adaptor or surge protector. This would be a good item to stock. Hard to find hardware stores there days. This item got 3 stars only because it was not the size I was looking for.