POWERTEC 70291-P2 4 Inch Dust Port to 2-1/2 Inch Hose Reducer, Dust Collection Fittings for 4" Machinery Dust Port and 2-1/2" Dust Collection Hose & Shop Vacuum Connection, 2 Pack

Includes: (2) Tapered Reducer Adapter (Black) Function: Serves as a 4” to 2-1/2 inch dust collection hose reducer and is designed to fit inside most 4-inch ports with a friction fit 4-Inch Dust Collection Fitting End: Designed with a tapered 4” end (tapers from 3.51” to 3.73”) that connects directly into a 4-inch nominal port.

Please note this is not designed to connect to 4-inch hose.

2-1/2” Inch Dust Collection Fitting End: Also possesses a tapered 2-1/2” OD end (tapers from 2.45” to 2.49”) that fits inside most 2-1/2” ID dust collector hoses Premium Build: Constructed with high quality ABS plastic for long-term durability and made to withstand the abrasive nature of workshop dust collection