PART NO. THREAD OD TUBE DIMENSIONS IS F D A B L S1 S2 1QB-12-02 M12X1.5 G1/8"X28 6 15.7 10 32 14 14 1QB-14-04 M14X1.5 G1/4"X19 8 17 12 35 19 17 1QB-18-04 M18X1.5 G1/4"X19 12 18 12 36 19 22 1QB-22-06 M22X1.5 G3/8"X19 14 19.5 13.5 41 24 27 1QB-24-08 M24X1.5 G1/2"X14 16 20 16 46 27 30 1QB-27-10 M27X1.5 G5/8"X14 18 20 17.5 47.5 30 32 1QB-30-12 M30X1.5 G3/4"X14 20 23 18.5 52.5 32 36 1QB-33-16 M33X2 G1"X11 22 26 20.5 59.5 41 41 1QB-39-16 M39X2 G1"X11 28 26 20.5 59.5 41 46 1QB-45-20 M45X2 G1.1/4"X11 34 28.5 20.5 64 50 50 Note: In case if you are interested to order the adapter in complete set with sleeve and nut ,it is necessory to inset suffix "RN" in after of part no.,for example 1QB-33-16RN