Description Brass pipe fittings, hexagonal bushings, reducing fittings, 1/8 1/4 3/8 1/2 3/4 mm, internal thread to external thread, threaded connection, reducing fitting, internal and external copper pipe fittings Brass pipe fittings, hexagonal bushings, reducing fittings, 1/8 1/4 3/8 1/2 3/4 mm Internal thread to external thread, threaded connection, reducer, internal/external copper pipe fitting *BSP thread: British Standard pipe thread 1/4" BSPM external thread, outer diameter 12.5 mm 3/8" BSPM external thread, outer diameter 16.5 mm 1/2" BSPM external thread, outer diameter 20.5 mm 3/4" BSPM external thread, outer diameter 26 mm 1" BSPM external thread, outer diameter 32.5 mm 1-1/4" BSPM external thread, outer diameter 41 mm 1/8" BSP internal thread, inner diameter 9 mm 1/4" BSP internal thread, inner diameter 12 mm 3/8" BSP internal thread, inner diameter 15.5 mm 1/2" BSP internal thread, inner diameter 19 mm Millimeters 3/4" BSP Internal Thread Inner Diameter Diameter 24.6 mm 1" BSP Internal Thread Inner Diameter Diameter 31 mm Type: Hexagonal Bushing Reducer External Thread Size: 1/4", 3/8", 1/2" 3/4", 1", 1.2" BSP Internal Thread Size: 1/8", 1/4", 3/8" 1/2", 3/4", 1" BSP Shape: Straight Through Fluid Type: Oil, Water, Gas Material: Brass Color: Gold Package Contents: 1 Brass Fitting Application Areas: Pneumatic Fittings, Pipe Fittings, Water Pipe Fittings, etc.