Check the listing for details. 5 x 4 inch Threaded Quick Coupler for Dust Collection (70186) POWERTEC. Color: Black, Condition: New. Listed at 9.99 USD. POWERTEC 70186 Threaded Dust Collection Quick Coupler Adapter, 5 x 4", Black The Threaded Quick Coupler by POWERTEC. The POWERTEC 5-Inch by 4-Inch Threaded Quick Coupler quickly connects a 5-Inch port to a 4-Inch dust collection hose. The 5-Inch I.D. end is designed to press onto a5-Inch diameter tapered port. The opposite threaded 4-Inch end simply threads into a 4-Inch dust collection port. No hose clamps are required. 5-Inch nominal end measures 5-13/64-Inch O.D. and 4-31/32-Inch tapered I.D.5-Inch I.D. end presses onto any 5-Inch diameter tapered dust collection portThe 4-Inch threaded end threads into a 4-Inch dust collection hoseTough, durable ABS plastic materialDoes not require hose clamps5-Inch nominal end measures 5-13/64-Inch O.D. and 4-31/32-Inch tapered I.D.POWERTEC is a leading manufacturer of high quality woodworking tools and accessories, machines, and an assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the latest innovations, technology, and product development to the industry.