Check the listing for details. Mylar 8" Hexagons 21 Piece Set - Quilting / Sewing Templates -. Condition: New. Listed at 27.23 USD. Mylar 8" Hexagons 21 Piece Set - Quilting / Sewing Templates - Your browser does not support JavaScript. To view this page, enable JavaScript if it is disabled or upgrade your browser. Made in the USA! 20- 14 mil thick Mylar Templates. 1 -1/8" Thick 4 inch sides Hexagon (along seam allowance lines) Acrylic TemplateMarkings are laser engraved for long lasting use. Hexagons measure 8" top to Bottom. Each side is 4".Each Mylar piece is conveniently engraved with it's size for easy identification. Mylar pieces are sized to fit inside the acrylic template.Just cut your material around the Acrylic template and you are ready to sew around the Mylar. Mylar is heat resistant, use a household iron on low. Remove the Mylar with the hole after sewing. Use over and over! This Acrylic does have the 1/4" seam allowance and Guideline Holes. Diamond Size is 4" on seam allowance lines. This acrylic part of the set is 1/8" thick Mylar is a trademark of DuPont Your browser does not support JavaScript. To view this page, enable JavaScript if it is disabled or upgrade your browser. quilting tools, quilting supplies