INCLUDES: (1) 4 Inch 90 Degree Elbow Dust Collection Fitting | FUNCTION: Offers an airtight, 90 degree (right angle) connection to work seamlessly with your 4” ID dust collection hose, pipes and other fittings. Please note: to fit or accommodate a 4” OD dust collection equipment port, a rubber coupling, like POWERTEC 70149, Dust Control Flex Cuff will be required. | QUALITY: Possesses a rugged black construction for long term durability and is molded out of high quality ABS material to withstand the abrasive nature of common workshops and vacuum dust collector systems | VERSATILE: Works exceptionally well with available woodworking tool dust collection ports, available POWERTEC hoses and attachments | SPECS: Overall size: 8-Inch x 8-Inch x 4-Inch. Features dual 4-inch nominal ends with actual tapered O.D. measurements 3-61/64-inches and 3-3/4-inch I. D.