The rings are designed as a template-free applique system to be used with quilting weight cotton, not wool or upholstery fabric or silk.  They are made by a quilter, for quilters who understand cotton fabrics, weaves, thread count. APPLIPOPS are a precision tool that will always work when used according to directions.  And they will work in 90 seconds, freeing you up to get on with the business of quilt making, not quilt preparing! Make 8 Different Circle Sizes: 0.375”, 0.5”, 0.75”, 1”, 1.25”, 1.5”, 1.75”, 2”