Brass Material Chrome Finished 1/4",1/2"...4"are all available Size: 1/2" Brass Ball Imported quality copper 61-62% to ensure long lifetime of usage; Wear corrosion resistant ceramic technology Anti-corrosion capacity: Iron or Steel Handle, Plastic Spray The valve is tight at 0.02/0.03Mpa while half-open or closed No leakage happens for 4hrs at 0.02/0.03MPa which closed