This is a downloadable sewing pattern, not an actual duster replacement. Do not purchase if you do not intend to sew. If your duster handle has prongs 4 1/2"- 5" long and about 1/2" wide at the base, this cover will fit. The "Dustin" sewing pattern can be used to make refills for your Swiffer 360 hand duster. We recommend using fleece but you may also use flannel. Computer drafted pattern pieces are included and the project is beginner friendly. This is a super fast sew! The pattern has been fully tested. Make them for yourself, for gifts, and for sale. PDF patterns are non-refundable. Ask questions before you purchase.