WoodRiver Small Dust Collection Cyclone System Shop vacuum port accepts 2-1/4" ends or 2-1/2" hose Inlet port accepts 2-1/4" ends or 2-1/2" hose 90 elbow creates cyclonic separator action 2-1/2" Rigid Flex hoses with 2-1/4" quick hose connectors expand to 36" Includes 2-1/4" x 1-1/2" reducer and 2-1/2" wire hose clamps