- Versatile wooden circle quilting template: The Jenerates seam circles feature an interlocking design that makes it easy to add or subtract seam and hem allowances on each sewing pattern, delivering precise, reproducible results in your tailoring projects. - Metric and imperial compatibility: Available in both centimeters and inches, allowing seam allowances from 0.2" to 1.2" or 1/4" to 1", and supporting different marking tools with two center hole sizes. - Easy to use and highly customizable: Align the outer edge with your pattern line for effortless marking. Roll along a ruler or guide your finger to adjust seam allowances with flexibility. - Great for various sewing and quilting projects: Perfect for adding seam allowances to self-drawn patterns, drawing trim lines, and marking trim lines. The seam circles serve multiple purposes, making them essential for beginners and experienced seamstresses. - Durable wooden construction and practical design: Interlocking circles stay aligned across layers, with a compact form that stores easily and withstands frequent use.