Downrods for ceiling fan and light (SE DC (Ward 7))

These are the attachments that came with my ceiling fan to extend the down rods to various lengths depending on how high your ceiling is. Black metal. One is about 23” long. The other is about 9 3/4”. The diameter was hard to take a picture hold the rod and the camera and the tape measure lol but it’s about 1”. No idea if these things have standard sizes but this is the fan they came with: https://sofucorfan.com/product/sofucor-60-inch-ceiling-fan-with-light-walnu...