PART NO. THREAD DIMENSIONS E F A B L S1 S2 2JA-20 1.5/8"X12 G1.1/4"X11 24.3 10 57 46 50 2JA-24 1.7/8"X12 G1.1/2"X11 27.5 11 63.5 50 55 2JA-32 2.1/2"X12 G2"X11 34 15 74 65 70 Nut and sleeve should be ordered separately.The nut NB200 and sleeve NB500 is suitable for metric tube,the nut NB200 and sleeve NB300 is suitable for inch tube.