Versatile Set: This quilting ruler set includes 4 square rulers in different sizes (4.5 x 4.5Inch, 6 x 6Inch, 9.5 x 9.5Inch, 12.5 x 12.5Inch) The quilt rulers made from acrylic material, 3mm/0.12Inch thick enough,laser-cut for a cleaner edge. Precise Measurements: The rulers feature a 1/4Inch grid with horizontal and vertical lines to accurate cuts and measurements. Construction: Made from high-quality transparent acrylic material, these rulers are sturdy and long-lasting. Colour:Blue Material:acrylic Package Contents: 1 * quilting ruler set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.