Just wondering if anyone knows how coarse a particular Swix bronze brush is. The one I have is square and has a row of black nylon bristles around the outside edge. I do not see a picture of this brush on their web site. There is a square one with blue nylon bristles on the website, but no coarseness rating. With the oval bronze brushes, the bronze with blue nylon is medium and the one with black nylon is coarse. Just wondering if anyone knows if it is the same with the square brushes. If it is a coarse bronze I assume it would be good for a pre wax brushing, but how about as an initial brush after waxing?