90 Degree Double Strip Quilt Ruler --- This ruler is amazing, whether you are a professional or a hobbyist, this ruler can help you do more designs, the 90 double ruler is designed to cut quarter-square triangles, quarters one of the square triangles, 90 triangles, trapezoids and more quickly! Keyholes in the ruler allow the rotary cutter to cut sides without damaging the ruler, allowing multiple layers to be cut at once. This is a double bar ruler perfect for designers, pattern makers, and seamstresses, and is also the first choice for professional tailors, apprentices or DIY embroidery lovers.Specifications: Material: ABS Size: 1510.5cm/5.914.13inches (6.0inch), 2011.5cm/7.874.53inches (8.0inch), 2513cm/9.845.12inches (10.0inch), 4718cm/18.57.09inches (18.0inch) Color: Transparent Application: Quilting, patchwork, sewing, garment design, etc. Optional style: 6.0inch, 8.0inch, 10.0inch, 18.0inch, 3pcs (6.0inch, 8.0inch, 10.0inch)Notes: 1. The above data are manually measured, and an error of 1-3 cm is allowed. 2. Due to different displays and lights, there may be errors in colors. Please refer to the actual items.Package Contents 1/3Pcs Ruler