Ebonized Wood and Brass Cupboard Turn. Tightly wedged through hole, post turns with knob to open or close cabinet door.
The stop portion is solid brass and the threaded stud is brass plated.
Knob: 1 3/8 inch diameter, 1 1/4 inch projection
Stop: 1 3/8 inch by 1/2 inch
Stud: 8-32 by 2 3/4 inches