Product Information Description: (Case Qty 6 Required) Material: Coupler- Brass, Plug- Steel Thread: NPTF Thread Size: 1/4" Body Size: 1/4" Select a Product Part NumberIncludesLength PND-DQCKIT62FM2-B, D2F2Coupler- 2.04", Plug- 1.66" (Coupler- 51.8mm, Plug- 42.2mm) PND-DQCKIT52FF2-B, D2M2Coupler- 2.07", Plug- 1.66" (Coupler- 52.6mm, Plug- 42.2mm)