we are a manufactory of nipple in china, Material: alloyH85/15 Red Brass:ASTM B43/CDA230 Standards: ANSI / ASME B1.20.1-1983(R1992) dimension:ANSI B16.15, threads : ANSI B2.1 / BS 21.ASTM B687 we have very good price.with the high quality!! all our nipple ship to USA CANADA, AU if you have any interesed in our products pls connect me for more informations and quotation waiting to have any business cooperation with you in the furture thanks/regards linda