Introducing the 4" Pipe Hose Adapter by POWERTEC. This power tool dust collection adapter was designed to make quick and easy connections from your hose or pipe to a wide assortment of 4" dust collection fittings. As a coupler, the adapter acts as a bridge - making a secure and reliable attachment without the loss of airflow or dust collection performance. Easy To Use: The adapter's hassle free design features a narrow end that fits onto standard 4-Inch PVC pipes (for example, drain, waste, vent, etc), while the tapered end slides onto most 4-Inch dust collection fittings, such as T's, Y's, elbows, blast gates, dust hood ports and more. It eliminates the need to connect and disconnect a hose clamp each time a new woodworking machine is used - thus making it perfect for most workshops and professionals that require a seamless workflow. Built for a Professional Workshop Environment: The POWERTEC Dust Port is made out of high grade ABS plastic material - well known for it's lightweight construction, high abrasion and heat resistance, and long-term durability. Specifications and Dimensions: Narrow End Measurements: 4-Inch O.D. and 3-49/64-Inch I.D. (fits inside 4" PVC pipe) .Large End Measurements: 4-7/32-Inch O.D. and 3-31/32-Inch I.D. (connects to 4" fittings) .Material: ABS Plastic .Color: Black.