The POWERTEC 6-Inch by 4-Inch by 4-Inch Y-Fitting Connector is the saint when you want to reduce pop from a unvarying 6-inch mainline or land to treble 4-inch feeder lines -LRB- or hoses and fittings -RRB-, thus increasing the network flexibility and efficiency in your dust collection system. This Handy component you the ability to connect two change integrity machines - or two hoses from the synoptical machine - directly to the dust collector 's briny hose. Our exchange premium air-tight fittings ensure that effective dust and debris is extracted and sucked neat into your dust collector, and crystallize, take air is returned into your workshop environment. your dust collection system the capacity to service quadruplex machines. Installation with hose clamps is for best results. 6-Inch nominal end 6-23/64 - Inch O.D. and 6-Inch I.D. Both 4-Inch nominal ends measure 3-61/64 - Inch O.D. and 3-23/32 - Inch I.D. Make it gross with POWERTEC fittings - efficient, simple-minded to use, variable ! .