You are buying 2 heavy duty plastic molds for making concrete tree rings, garden edging, flower beds , unlimited projects. 1- 3rd of a circle 4" wide and 2" deep diameter of 22 1/2 inch, also you are getting a rectangle mold 6" long x 4" wide and 2" deep. Giving you endless options as you can see from pictures. Heavy duty molds with slight taper for easy demolding.