Since it likely is my only use ever for it, I went cheap and ordered one off of the internet. Not surprising, it was Chinese. The surprise was it was shipped directly from China. Took a while to get here. Arrived day before yesterday when the temperature was 20 degrees! Yesterday was in the 50's so I put it to use.
My bench top drill press turns way too fast so used a hand held variable speed drill motor. The hole is not pretty but it is drilled and functional. The drill worked very good. Drilling from both sides, the material was 1/4 inch, also worked fine.
One detriment: I had measured the distance between steps locally and found it to be 3/16 inch. On the Chinese unit it is barely 1/8 inch.