Mylar 2" Hexagon 51 Piece Set - Quilting/Sewing Templates 50- 14 mil thick Mylar Templates. 1 -1/8" Thick 2 inch Hexagon Acrylic Template Each mylar piece is conveniently engraved with it's size for easy identification. Mylar pieces are sized to fit inside the acrylic template. Can be ironed with low setting. Measures 1 inch from corner to corner from the seam allowance lines. Matches up with our 1" Equilateral Triangle set. UPC#635231872067 and our 1" Starpoint Set. The Acrylic piece does have the seam allowance and Guideline Holes. Hexagon measures 2" Top to Bottom of Seam Allowance lines. Just cut your material around the Acrylic template and you are ready to sew around the Mylar. -Mylar is a trademark of Dupont