POWERTEC 2-1/2 Inch Y Fitting for 2 1/2 Inch Dust Collection Hose, 2 1/2 Inch Dust Collection Hose Connector Fittings for Dust Collection System, 1 pack (70179) FUNCTION: Connects 2-1/2” nominal ID dust hoses together to split to one or two machines, and then extend to other compatible machines FEATURES: Fits inside dust collection hoses and secures with band clamps, easy-to-use and versatile design that accommodates a variety of dust collection systems and woodworking power tools with 2-1/2” ID ports. BUILD: Fittings is constructed out of rugged ABS plastic for abrasion resistance, toughness and long-term durability DIMENSIONS: All three 2-1/2-Inch nominal end measure 2-31/64 inch OD and 2-1/4” ID (measures 2-7/32 inch) | Material Thickness: 1/8 inch, Weight: 0.20062065842 pounds, Manufacturer: POWERTEC