Cleaning duster kit compatible with swiffer duster refill and handle, extendable handle, super extender handle, and AIR U+ upgraded handle. Heavy-duty duster refill is designed with 2 sides, featuring 4X ultra-fibers and 360-degree all-round cleaning. It efficiently adsorbs and locks in dust, preventing it from flying again. Microfiber duster kit comes with 30 replacement pad refills and 1 upgraded short handle. The middle position of the handle features a raised portion to securely hold the duster refill, preventing it from falling off during use. We recommend shaking the for swiffer duster refill evenly before use.