【 About this item 】 Size: 4AN flare to 1/4" NPT, the thread size of 4AN is 7/16 UNF, Degree: 90 degree elbow. Size: 4AN flare to 1/8" NPT, the thread size of 4AN is 7/16 UNF, Degree: 90 degree elbow. Size: 4AN flare to 3/8" NPT, the thread size of 4AN is 7/16 UNF, Degree: 90 degree elbow.