... olympic sports centre,high quality made of No.59 brassall fittings in different specification:1216,1620,2632,and so on.special products ... of 2008 national olympic sports centre,in high quality and reasonal priceBrass compression fittings with O-ring for PEX pipes1, Material ... NPT8, Certificate CE, ISO9001:20009, Guaranty 3 Years guaranty brass fittings for aluminum composite pipes