I installed the name brand gutter brushes on the back of my house last year but needed to extend them along the side of the house where pines grow. This off-brand of brushes was less than half the price of the name brand so I thought I'd try them. The brush bristles seem to be about as dense as on the name brand, which is good. But the diameter of the individual bristles is noticeably smaller, making them less stiff. I don't know if this is bad or not, only time will tell.