I used it together with the trapezoidal screw to make a hand press machine. Although processing of the shaft hole is necessary, it can be done easily. It is easy to do it if possible with marks indicating the center position if possible.
Used for screw feed of press machine. The center of the handle was machined with a drilling machine with M12 screw holes, but the machinability was very good, it was easy to make. The screw of the rotation stopper of the handle attached M5 screws from the side in two places. The tulip-structured handle with its side open wide can be saved because this process can be done without using a long drill.