2PCS 3AN 4AN 6AN 8AN 10AN 12AN 16AN 20AN Female to Male Reducer Adapter Fitting
Size - The Adapter is a 20AN female to 16AN male. The thread size of the 20AN is 1-5/8-12 UNF. The thread size of the 16AN is 1-5/16-12 UNF. Size - The Adapter is a 16AN female to 12AN male. The thread size of the 12AN is 1-1/16-12 UNF.