INCLUDES: (1) Y-Type Dust Collection System Fitting FUNCTION: This three-hole connector allows you to reduce down from a 6” port (or main line) onto 4 inch branches. Can be used as a replacement fitting for dust collectors, like POWERTEC DC1512 or similar sized units. FEATURES: The 6” opening is a female port and works with 6” OD pipe or other male ports. Dual 4” OD ports to accommodate dust collector hose lines, pipes, and tools like table saws, jointers, planers and sanders PRO BUILD: Made with high quality ABS plastic material designed for strength and durability – Able to withstand dust, debris and other abrasives that commonly cause wear and tear SPECS: 6-Inch nominal end measures 6-23/64-Inch O. D. and 6-Inch I. D. Both 4-Inch nominal ends measure 3-61/64-Inch Outer Diameter. and 3-23/32-Inch Inner Diameter – Be sure to check your parts interface for size compatibility. Please note this is not designed to work with schedule 40 or other schedules of PVC pipe