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Feature
Connect 4" ID flexible dust collection hose to 2-1/2" ID flexible dust collection hose4" nominal OD end measures 3-61/64" OD and 3-41/64" ID; 2-1/2" nominal OD end measures 2-15/32" OD and 2-9/32" ID
Adaptable to most shop vacuum cleaner hoses with 2-1/4" OD connectors
Use Powertec 70149, Dust Control Flex Cuff (sold separately) to connect 4" nominal OD end to other 4" OD adapters; Use Powertec 70148, Dust Control Flex Cuff (sold separately) to connect 2-1/2" nominal OD end to other 2-1/2" OD adapters
Tough durable ABS plastic