This duty hose reducer attachment is ideal for connecting different diameter dust hoses and fittings. Made of durable plastic, it features a 4" inlet that tapers down to a 2-1/2" outlet to join hoses of varying sizes. Two stainless steel clamps are included to securely hold the reducer in place. Whether used with shop vacuums, dust collectors or other extraction equipment, this reducer fitting allows for maximum airflow and suction where different hose diameters meet. It installs easily and helps create an airtight seal to capture fine dust and debris. Ideal for woodshops, metalworking and other industrial applications, this reducer is essential for optimizing dust collection systems with multiple hose configurations.