PANAM - 4N-6N-FF-10K 1/4" NPT X 3/8" NPT Female/Female

1/4" NPT Female x 3/8" NPT Female, 10,000 psi Rated Steel Adaptor, Hexagon Socket, 316 Stainless Steel, Maximum Working Pressure 690 bar, PANAM These fittings within the industry are known as 10K fittings which have a 10,000 psi working pressure rating.