Swivel Ball Joint Ideal for CNC Routers or other articulating equipment Extends life of Flex Hose Zinc Plated, 20 ga. Raw Ends for Spiral Pipe / Hose to slip over either side Swivel Ball Joints are commonly used where rigid duct connects to flexible dust collection hose on CNC routers or other types of articulating equipment for Dust Collection Systems. When used properly, the life of the flexible hose is extended. See other ODC Spiral Ducting Componets for ATEX certified NFPA complaint abrasion resistant dust collection hose ideal for CNC Routers.