There are 3 sizes of edges. 1/2 inch deep, 3/4 inch deep and 1 inch deep.
Each size has 4 angles of difficulty. Slopey (105 degrees), Flat (90 degrees), Incut ( 75 degrees ) and Really Incut ( 60 degrees ).
The holds found in this set are also sold in identical pairs in Screw On System Crimps.