Universal Compatibility Connects most 4-inch nominal OD ports to 2-1/2-inch ID dust
Durable Construction Made from premium ABS plastic for long-lasting use in a
Tapered Design Provides a secure friction fit for a quick and easy connection.
Optimizes Airflow Helps maintain strong suction by providing a smooth transition
Material ABS Plastic
Nominal 4" End 3-61/64" OD and 3-43/64" ID
Nominal 2-1/2" End 2-31/64" OD and 2-5/16" ID
Color Black
Brand Zephyr's Market
MPN ABS Plastic Black 4b9e65ef-8362-4a8d

Check the listing for details. 4 Inch To 2-1/2 Inch Dust Collection Reducer Adapter. Color: Black, Condition: New. Listed at 9.99 USD. The 4” to 2-1/2” Cone Reducer. Specifically, it allows you to step down from a larger main line to a smaller branch line without compromising air velocity or the effectiveness of your dust collection system.

$7.99
$9.99