Check the listing for details. POWERTEC 70193-P4 Screw End Quick Coupler for 4" Hose ?V Left-Hand Threaded,4PK. Color: Black, Condition: New. Listed at 26.97 USD. Introducing the Screw End Quick Coupler by POWERTEC.INCLUDES: (4) Plastic Hose End (Black)FUNCTION: This quick connect fitting provides air-tight, quick and easy connections between 4-Inch OD ports (fitting fits inside 4”OD port) and a 4-Inch ID left-hand flexible hose for Shop Vac and other dust collection vacuumsTHREADED: Hose adapter reduces the need to connect and disconnect a hose clamp each time a new woodworking machine is used and screws directly into Left-Hand 4” flexible Dust Collection HosesEASY-TO-USE: The threaded end securely screws into the flexible hose while the tapered end allows an assortment of press-on attachmentsPREMIUM BUILD: Made with lightweight ABS plastic, featuring a high quality construction designed for strength and long-term durability to support your dust collection system This hose connector was designed to provide you with a quick and easy connection between a 4-inch OD dust port/fitting and 4-inch ID left-hand flexible hose. This must-have component not only expands the versatility and efficiency of your shop vac or dust collection system, but does so instantly and with measurable results. Easy-To-Use Threaded Design The threaded 4-inch end of the coupler screws firmly into your flexible hose, thus ensuring an airtight friction fit. This eliminates the need for a hose clamp, or the hassle of constantly connecting and disconnecting each time a different woodworking machine is utilized. Easy-To-Use Tapered Design The nominal 4-inch (3-3/4-inch OD) end is slightly tapered, providing a snug press-on fit to your 4-Inch OD port, and allows you to quick change from port to port. Depending on your project, this provides you with a choice of adaptive accessories for your dust collection system. Additional Product Specifications Color: Black Material: ABS Plastic 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.