McMaster 6523T56 Fire Fighting Hose Fitting, Brass Reducing Adapter, 2 1 2 NH NST Male × 3 NPT Male 4WLX9 Greenlee Manual Hydraulic 746 or 746A Greenlee Manual Hydraulic 746 or 746A Ram Horsepower @ Three Phase 600V AC 15 hp For Use With Water Shape Straight Type Reducing Adapter Connection Style Threaded Male Hose × Threaded Male Pipe Fire Hose Trade Size (A) 2 1 2 Hose Connection Thread Type NH NST Pipe Size (B) 3 Pipe Connection Thread Type NPT Material Brass Length 2 3 4" RoHS Compliance RoHS 3 (2015 863 EU) compliant with exemption 6(c) Lead in copper alloy REACH Compliance Not Compliant DFARS Compliance Specialty Metals COTS Exempt Country of Origin United States USMCA Qualifying No Schedule B Number 7412 Some have a hex in the middle so you can tighten them with a wrench