Much better than metal plywood clips - building inspector didn't mind either. I highly recommend it - by the way, buy more than you think you need or you'll have to use crappy metal clips. In terms of size, they have a thicker profile than metal staples (obviously), but they don't stick out any higher than metal staples because they fit snugly against the plywood. In general they work well, the site supervision suits them and they are strong.