OLFA 1071819 QR-6x12 6-Inch x 12-Inch Frosted Advantage Acrylic Ruler Designed for right and left-handed users Suitable for most quilt cutting and scrapbooking Special marked grid lines for accuracy and precision Frosted backing allows for easy reading on dark, light or patterned materials Non-slip features are manufactured into the ruler and will not wear off over time