SARIDITTY 4pc Boomerang and Circles Set - Exterior Ruler Measures 6.5"" x 6.5"" Use to accent your quilts with a variety of circle sizes. Have fun creating half circles, petals, orange peels, baptist fans, full circles, bursting circles, clamshells, and more! Providing muliple circle Sizes from 2 - 6"". "
Each Sariditty Ruler comes with (2) "Tracing Nubs". There is one large hole and one small hole for different size marking pens/pencils. Use the tracing nub to either trace the design before you quilt, practice using the ruler, or try out various quilting designs.