... 4", 5", 6"2.case:SS304 3.internals: brass, phosphor bronze, stainless steel4.liquid filled pressure5.connection ... size:1/8", 1/4", 3/8", 1/2", 3/4"6.connection threads: NPT ... , BSP(G, PF), PS, BSPT, UNF. 7.connection ... bezel: 304 stainless steel, 316 stainless steel9.connection material: brass, stainless steel10.dial and pointer ...