Vacuum Hose Adapters Universal Hose Reducer - This is a rubber reducer which fits 2.5 in connections. If it is a little to small or the same size as your hose connection run the end under hot water to soften the rubber then try fitting it on your hose. This universal vacuum hose connector can be cut down in size to fit hoses from 1 inch to 2 inch. The rubber material makes it easy to cut. This shop vacuum hose adapter can be used with dust collectors, miter saw dust collection, dust collection for router table or with your wet dry vacuum. Vacuum attachment adapter for your workshop wet dry vac - Works with a variety of brands of shop vacuum hoses, just measure your hose diameter.