[Feature] 360° Swivel design for easy assembly. It can be reused and recycle. Size: [4AN Size]: The thread size of 4AN is 7/16-20 UNF. The AN side is sealed by a 37 degree angle. [6AN Size]: The thread size of 6AN is 9/16-18 UNF. The AN side is sealed by a 37 degree angle. [8AN Size]: The thread size of 8AN is 3/4-16UNF. The AN side is sealed by a 37 degree angle. [10AN Size]: The thread size of 10AN is 7/8-14 UNF. The AN side is sealed by a 37 degree angle. [12AN Size] The thread size of 12AN is 1 1/16-12 UNF. The AN side is sealed by a 37 degree angle. [Application]: The swivel fitting is work with stainless braided and nylon braided Oil/ Fuel/ Water/ Fluid/ Air Line Package Included 2 / 4 Pcs 45 Degree Swivel Hose End Fitting.