8103 Apple Cores 2 1/2" X 6" templates by Marti Michell. Apple Core is a traditional one-patch quilt pattern. Nested template set consists of two nested templates for cutting 2-1/2" and 6" apple cores. Each template has 6 holes for marking dot-to-dot sewing. Instruction booklet includes grainline recommendations for easiest sewing, and metric conversion.