In oem form, the knobs are one with the three cables and light switch rod ( non removable) and separate or removable on the fan speed switch and wiper switches due to the mounting of these switches and cables through the steel dash plate. In many cases, the cables get stiff and the knobs are pulled off the ends by accident. So they sell replacement metal knobs with small set screws to attach them to the cable ends. Your doing to opposite and removing the knobs from unbroken cables... Or so it sounds.
1975 CJ-6 304 T15 Dana20 30/44 3.73
1983 CJ-8 258 T5 300 30/44 3.31 Looking for full or half hardtop buy or trade
1986 CJ-7 Laredo 4.6 stroker T5 300 30/44 3.31
1986 TJ-7 Trail Jeep project in the works
2003 Inca Gold TJ Rubicon