PortMatchMatch any tool dust port to any shop-vac or collector hose, with the exact reducer

Not a direct fit. Joining the Oneida Dust Deputy 2-1/2 in inlet to a Festool D50 antistatic hose needs a 2-1/2 in to 50 mm step reducer. Measured OD and ID of each end, the real-world trap, and the exact reducer to buy.

Updated 05 September 2026.

CONNECTION

Connect a Oneida Dust Deputy 2-1/2 in inlet to a Festool D50 antistatic hose

How to join a Oneida Dust Deputy 2-1/2 in inlet to a Festool D50 antistatic hose, and what stops it leaking dust.

Reducer required

Not a direct fit. Joining the Oneida Dust Deputy 2-1/2 in inlet to a Festool D50 antistatic hose needs a 2-1/2 in to 50 mm step reducer.

END A63.5 mmOneida Dust Deputy 2-1/2 in inlet (2-1/4 in ID)
END B49.2 mmFestool D50 antistatic hose (1-15/16 in ID)

Rings drawn to scale from the measured diameters in the table below.

The two ends

End AOneida Dust Deputy 2-1/2 in inlet (2-1/4 in ID)
End BFestool D50 antistatic hose (1-15/16 in ID)
Fit typehose cuff into female socket
Reducer needed2-1/2 in to 50 mm step reducer

Shop notes

Measured across the joint between the Oneida Dust Deputy 2-1/2 in inlet and the Festool D50 antistatic hose, the port socket (57 mm) is 7 mm larger than the hose tip (50 mm), so the hose tip rattles inside without gripping. A 2-1/2 in to 50 mm step reducer closes that 7 mm step so the two hold together instead of leaking at the gap.

A 7 mm mismatch feels close enough to force, and it will hold for a minute before it works loose under airflow. Fit the step ring rather than trusting friction on a gap this size.

The reducer to buy

Shop 2-1/2 in to 50 mm step reducer on AmazonaffiliateFind 2-1/2 in to 50 mm step reducer on eBayaffiliate

Related connections

Questions and answers

Connect a Oneida Dust Deputy 2-1/2 in inlet to a Festool D50 antistatic hose?

Not a direct fit. Joining the Oneida Dust Deputy 2-1/2 in inlet to a Festool D50 antistatic hose needs a 2-1/2 in to 50 mm step reducer.