I have looked on line for something like this and in some of the different garden shops around my area and have not found one like it. The closest thing I could find was a circle hand hoe at Lee Valley Tools and that sells for about $18.50 each. I now have these on our main web site right on the front page. They are listed for $9.00 each and can be shipped at any time.
To get your own just pop on over to Estate Perennials .