This article serves to refill kits with the brush or the handle. Dusters are oneway, it takes 2 seconds to replace. This is the official product therefore RAS compared to the reputation of swiffer: dust does not volle, remains in the duster. Expect several cleaning with a feather duster (the kit contains 10), while based on your degree of fussiness.
For the price nothing wrong, it has nothing to do with a classic cloth dust that remained from the closet! I use the tilt handle XXL pack and it's really great!