Reproduction straight tapped spindle kit.
This kit also includes two set screws which thread directly into the spindle and 6 washers to place behind the door knob to keep the knobs from shimmying back and forth once installed.
Spindle Length: 4 1/2 inches
Spindle Width: 1/4 inches
Set screws are a #10, 3/8" screw with 24 threads per inch.