Infinity Tools 5" to 4" Reducer

It adapts a 5" hose down to a 4" hose. Browse more dust collection fittings to match your other components.

The tapered shape provides a gradual transition from 5" to 4", which gives better air flow and helps maintain suction compared with an abrupt step-down.

It is useful where a 5" hose or main line needs to feed a 4" machine port, branch, or hose — common on larger collectors. Explore the full dust collection range.

The larger 5" end connects to your 5" hose, and the smaller 4" end connects to the 4" port or hose.

Yes. Smoother air flow at the connection helps preserve suction, so your collector captures more dust and chips at the source.

Yes, it is well suited to stepping a 5" main line down to a 4" branch or machine port. Pair it with compatible dust collection hoses.

Yes. It is one of many dust collection fittings you can combine to route ducting around your shop.

It is an Infinity Cutting Tools dust collection fitting, part of our broader dust collection lineup.

This fitting handles larger-diameter connections, stepping 5" down to 4", and is tapered for better air flow. Smaller reducers handle smaller hose sizes. Browse all dust collection fittings to find the right size.

Depending on your layout, you may want additional reducers, T-fittings, hoses, and clamps. See all dust collection hoses and fittings to finish the job.