1)Stainless steel hex bush size:1/8"---4"

2)stainless steel nipple grade: 304.304L,316.316L

3)Rating:150PSI on fittings

4)Thread:NPT ,BSPT, G

5)Technology: all of our products are made by investment casting.

We are a great manufacturing corporation in china ,specializing in many kings of pipe fittings.