Infinity Tools 4" to 2" Reducer

It adapts a 4" hose down to a 2" hose or fitting, letting you connect a large main line to a smaller tool port. See more dust collection fittings.

The large end measures 3-15/16" O.D. x 3-11/16" I.D., and the small end measures 2" O.D. x 1-13/16" I.D.

Yes. The 4" end is sized to fit inside the port on the Infinity 115-311 blast gate, making it easy to add to an existing 4" run.

Yes, that is exactly its purpose. One side accepts a 4" hose or fitting and the other steps down to 2". Pair it with matching dust collection hoses.

It is useful for routing a 4" main line to smaller 2" ports on sanders, routers, jigs, and bench-top machines that do not accept a full 4" hose.

The small end is 2" outside diameter with a 1-13/16" inside diameter, so a 2" fitting can slip over it or a 2" hose can connect to it.

It is made by Infinity Cutting Tools as part of their dust collection lineup. Explore the full dust collection collection.

It is designed to step a 4" dust collection line down to 2". As long as your hoses and fittings match the listed 4" and 2" diameters, it will connect them.

A reducer matches mismatched hose sizes so air and dust keep moving through the system. For best results, keep your overall ductwork as large and direct as the tool port allows.

The large end is 3-15/16" O.D. x 3-11/16" I.D., which corresponds to a standard 4" hose connection commonly used in shop dust collection systems.