Cro-Hooks

Here is a layout with the cro-hook on it.

It says: My grandmother taught me how to cro-hook when I was a teenage girl. We made several afghans and I have since used the technique to make prayer shawls. See the instructions I posted here as a pdf file.
My grandfather took a wooden dowel (3/8”) and made us hooks. Mine is 18” long. I have a second one that is about 22” long. The hook made by him is on the top (below). The two steel hooks inside the package are sizes I and K and are still smaller than the one he made. I think his would be about a size P. The larger hooks makes a softer shawl.Kit used for layout is Dragonfly Garden by Maddy Fernandez.