stainless steel quick release coupling connectors B 1.Size:1/2-6 2.Types: A,B,C,D,E,F,DC,DP ... :free samples 4.CE,ISO stainless steel quick release coupling connectors B 1,Material: 304,316,316L,304L,CF8,CF8M ... investment casting.5,Standard:DRN2828,MIL-C274876,Size:1/2”-6”7,Types: A,B,C,D,E,F,DC,DP8 ... 4" 200PSI(14.8bar) 2 1/2" 225PSI(15.8bar) 6" 150PSI(10.5bar)13,Thread Type: NPT, BSPT, BSP, DIN259 ...