Large Black w/White 4 -Speed Pattern Reverse Lock Out Shifter Knob
This round knob measures 1.120 inches has the smaller shift pattern, and threads for the 1964-67 Chevy reverse lock out handles.
If you like a knob that is larger than the stock unit this is what you are looking for.
This knob is oversized at 2 1/8" diameter, the factory knob is 1 1/2" diameter. This knob has the recessed 9/16"-18 threads.