At first it looked like a good replacement, but the side brush lasted a day or two before completely disappearing. I've seen one dissolve all of its bristles and another break off on the first brushing. roller brush. Sticks to most cleanings and requires hand twisting. It's useless if it works when I'm not at home. Don't waste your money, buy genuine parts. I had no problems with Shark. Just wanted to save some money but looks like you definitely get what you pay for.