Kelly’s book, “Hexagons, Diamonds, Triangles, and More” contains patterns for 37 templates and instructions for making templates from template plastic. However, the full set of Kellyquilter Templates: 60-Degree Edition contains all 37 templates from the book (including the two pieces for the bonus block)!
Template sizing is based on the finished side length of the shape. For example, H4 is a hexagon with finished side lengths of 4″ each.