Rogue Hoe - https://roguehoe.com/. 

I'm not sure the best place to order them from now, I've ordered direct in the past but it looks like in a quick search there are several places to order them from now.  

I get the ones with the ash handle, 5" field hose is my go to when walking beans.  Going on 10 years, with a linseed oil treatment to the handle every few years and they are as good as the day I got them.