4-inch & 2-1/2-inch Dust Control Flex Cuff with Hose Clamps

It includes a flexible hose cuff coupler with dust hose clamps. Provides a perfectly sealed, airtight connection between a pair of dust collection equipment ports, hoses, or fittings. These reusable flex cuffs are easily installed and can be removed without the need for assorted screws or duct tape.
(DCR9) 4"

(DCR10) 2-1/2"