patchwork ruler double hexagonal quilting sewing tool diy template drawing

material: made of acrylic, it is good toughness and durability. thickness: 2mm. unit: metric unit. design: the design of different shapes using small size and large size connection is to meet various patchwork needs of work. widely uses: designed for sewing patterns, stitch, seam allowance, patchwork, measuring, drawing, cutting, etc. suitable for: professional tool for fashion designers and pattern makers, al