POWERTEC 70149   Dust Control Flex Cuff with Hose Clamps, 4-Inch Designed to airtight connection of two fittings or hoses without using duct tapes Rubber construction provide flexibility to bridge slight diameter differences A pair of hose clamps included Both ends measures 4-9/16-Inch O.D. and 4-5/64-Inch I.D. Connect to 4-Inch O.D. adapters or hoses