The POWERTEC 71216 Band Clamp for Dust Collector, 23-1/2 in. to 24-3/16 in. Dia, provides an airtight attachment of your dust bag onto your dust collector. Ideal for use on a wide variety of dust collectors with diameters ranging from 23-1/2 in. to 24-3/16 in., this essential accessory makes dust bag replacement a quick, easy and efficient task.